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Forces & Motion

Crovato/Richerson

QuestionAnswer
What force is responsible for the repulsion between two positively-charged particles? electric
The acceleration due to gravity on the surface of Mars is about one-third the acceleration due to gravity on Earth's surface. the weight of a space probe on the surface of Mars is about _____________________ one-third its weight on Earth's surface
What is the weakest universal force? gravitational
A weak nuclear force is associated with ________________ nuclear decay
What's conserved when two objects collide in a closed system? momentum
The force that opposes the motion of objects that touch as they move past each other is _______________ friction
When a falling object reaches terminal velocity, the net force acting on it is ________ there is no force
The type of force measured by a grocery store spring scale is _______ weight
The forces acting on a falling leaf are _______ and _______ gravity and air resistance
____________ is caused by the downward force of gravity and an initial forward velocity. projectile motion
When a pair of balanced forces acts on an object, the net force that results is __________ equal to zero
Newton's third law of motion describes ____________ action and reaction forces
An orange might roll off your cafeteria tray when you stop suddenly because of the orange's _______ inertia
The force that keeps an object moving in a circle is called _________ centripetal force
The property of matter that resists changes in motion is called _______ inertia
According to Newton's second law of motion, the acceleration of an object equals the net force acting on the object divided by the objects ________ mass
Your weight equals ________ mass times acceleration due to gravity
The product of an objects mass and velocity is its ________ momentum
What kind of friction occurs as a fish swims through water? fluid
Which universal force acts only on the protons and neutrons in a nucleus? strong nuclear
Whats the SI unit of force? newton
The gravitational force between two objects increases as mass __________ or distance decreases increases
What an unbalanced force acts on an object, the object ________ accelerates
As an astronaut travels far away from Earth, her weight ____________________ decreases because gravity decreases
An open parachute increases air resistance of a falling sky diver by ___________ increasing surface area
As you push a cereal box across a tabletop, the sliding friction acting on the cereal box ___________________ acts in the direction opposite of motion
Created by: dcrovato
 

 



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