DHS PS Ch. 3 - Forces (Online Course)
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What happens to the gravitational force as objects get farther apart? | show 🗑
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| You exert a gravitational force on _________. | show 🗑
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| How does weight relate to mass? | show 🗑
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| What causes thrown objects to travel in a curved path? | show 🗑
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| What happens to the amount of gravity a projectile experiences as it moves through the air? | show 🗑
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| What provides centripetal force when a car experiences centripetal acceleration around a corner? | show 🗑
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| show | toward the center of the circle
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| Astronauts "float" when inside an orbiting spaceship because they are _______________ | show 🗑
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| show | for every action force there is an equal and opposite reaction force that occurs at the same exact time.
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| show | The rocket's engines exert a force on exhaust gases and the gases exert a force back on the rocket.
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| show | the law of conservation of momentum
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| Whenever a force is exerted, another force occurs that is ______ in size, and ________ in direction. | show 🗑
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| show | act on the same object.
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| An object will have zero momentum if ________. | show 🗑
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| show | the force of the table back up on the cup
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| When a falling object reaches terminal velocity, the force of gravity ___________ the force of air resistance. | show 🗑
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| When force is increased on an object, what happens to its acceleration? | show 🗑
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| show | terminal velocity
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| Name 3 benefits to friction. | show 🗑
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| All objects fall at a constant rate of 9.8 m/s2 unless you factor in _________ | show 🗑
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| Which of the following will result in the greatest acceleration? | show 🗑
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| show | an object will accelerate in the direction of an applied force, depending on the object's mass.
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| Static friction occurs when two objects are _______________. | show 🗑
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| The upward force on an object falling through the air is _______________. | show 🗑
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| show | Newton's second law of motion
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| A feather will fall through the air more slowly than a brick because of _____________. | show 🗑
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| In a vacuum, an apple and a feather that are dropped from the same height at the same time will ___________________. | show 🗑
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| show | 9.8 m/s2
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| According to Newton's second law of motion, ______________________. | show 🗑
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| The path of a projectile is _______________. | show 🗑
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| show | acceleration
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| The size of the gravitational force between two objects depends on their _________________. | show 🗑
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| As you get farther from the surface of Earth, your weight will _________________. | show 🗑
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| When a force is exerted on a box, an equal and opposite force is exerted by the box. These forces are called ____________________. | show 🗑
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| A real car moving at 10km/h has more momentum than a toy car moving at the same speed because the real car _________________. | show 🗑
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| show | momentum
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| The statement "to every action there is an equal and opposite reaction" is _____________. | show 🗑
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| Momentum is measured in what units? | show 🗑
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| show | the law of conservation of momentum
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| show | weightless
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| If gravity did NOT affect the path of a horizontally thrown ball, the ball would _________________________. | show 🗑
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| show | horizontal
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| If a 500-N action force is exerted to the right, the reaction force will be ________________________. | show 🗑
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| Friction between the tire of a moving car and the dry pavement is ____________ friction. | show 🗑
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| show | four
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| show | Earth
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| show | Air resistance greatly increases.
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| Which object has the greatest inertia between a bowling ball, tennis ball, and a beach ball? | show 🗑
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| show | greater
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| How does weight relate to mass? | show 🗑
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| show | connected
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| show | mass
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| show | divided
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| show | friction
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| What is the ultimate source of friction where surface bumpers stick together? | show 🗑
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| show | static
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| show | sliding
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| When a force occurs between a rolling object and the surface it rolls on, it is known as ____________________ friction. | show 🗑
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| show | air resistance
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| An object's size, shape, and speed depend on the _____________ of air resistance. | show 🗑
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| Is gravity a ______ _______ force that gives the universe its structure? | show 🗑
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| The four basic forces include electromagnetic force, strong nuclear force, weak nuclear force, and ___________________. | show 🗑
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| show | inertia
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| show | weight
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| show | mass
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| What do objects in the space shuttle do when they have no force supporting them? | show 🗑
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| show | centripital, force
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| show | opposite
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| show | Newton's third law of motion
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| show | different
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| show | momentum
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| show | transferred
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| Two objects have the same mass. Object A is motionless. Object B is traveling at 2 m/s. After they collide, the stick together and move as one unit. What is their resultant velocity? | show 🗑
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| Which law explains why a motorcycle will always beat a car if they both produce the same amount of force? | show 🗑
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| Which law explains why once a satellite is put in motion, it will continue to stay in motion? | show 🗑
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| Which law explains why when a canon fires a canon ball, the canon ball goes one direction while the canon goes the opposite? | show 🗑
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| show | Law of conservation of momentum
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| show | Cambridge University in Britain
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| show | Because of the bubonic plague
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| You can only add forces together when they are _________ ? | show 🗑
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| show | in opposite directions.
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| If two object are twice as far apart, the gravitational force between them is now _____ as strong. | show 🗑
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| show | 1/9th
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| If two object are 4x as far apart, the gravitational force between them is now _____ as strong. | show 🗑
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| show | 1/100th
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| show | Newtons
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| show | N/kg
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| The gravitational force on the moon is ______ as strong as the Earth's. | show 🗑
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| Newton's first law of motion is also known as the law of _____ . | show 🗑
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| show | Seat belts
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| Air bags inflate using a chemical reaction that produces _______ . | show 🗑
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
basmith
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