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Motion - Machines

A push or a pull is called a: Force
What causes an upject to speed up, slow down, or change directions? Force
Forces that are equal and opposite are called: Balanced Forces
Forces that are not equal or opposite are called: Unbalanced Forces
Which type of forces causes a change in speed or direction? Unbalanced
Which type of forces do NOT cause a change in speed or direction? Balanced
What do we call the pulling force of the Earth on an object? Gravity
What do we call the pulling or pushing force created by electrons? Electricity
What do we call the push or pulling force around a magnetic field? Magnetism
What do we call the rubbing force that opposes motion? Friction
Which law of motion states "An object at rest will remain at rest and an object in motion will remain in motion, unless and outside force acts on the object"? First Law
What is the tendency of matter to resist a change in motion? Inertia
Which of Newton’s laws of motion discuss the relationship between mass, force, and acceleration? Second Law
What does Newton’s Third law of Motion state? For every action there is an equal but opposite reaction.
Which of Newton’s laws is demonstrated by blowing up a balloon and then letting it go? 3rd Law
Which of Newton’s laws is demonstrated when you feel pushed forward after a car has stopped suddenly? 1st Law
Which of Newton’s laws explains why more force is needed to push a grown up on a swing rather than a baby? 2nd Law
Newton’s second law of motion explains the relationship between what three things? Force, Mass, Acceleration
When a driver presses on the brakes, your bodies show ____ when they move forwards. Inertia (1st law)
When a force causes an object to move over a certain distance, we say ___ has been done: Work
is lifting up a box off the floor work? YES
Is standing while holding a heavy box work? NO (no movement)
What is the change in position of an object relative to another object? Motion
How is speed calculated? Distance divided by time
How is velocity different from speed? Velocity includes a direction
Is increasing your speed changing the velocity? YES
Is decreasing your speed changing velocity? YES
Is moving at a speed of 10 mph North changing your velociity? NO
Is making a turn changing your velocity? YES
What do we call a change in velocity? Acceleration
What are 3 ways to accelerate? Increase speed, decrease speed, change directions
How do we calculate work? Force x Distance
What can we use to measure forces? Spring Scale
What is the name of Newtons first law of motion? Inertia
What is the name of Newtons second law of motion? Force = Mass x Acceleration
What is the name of Newtons third law of motion? Action - Reaction
Created by: sloanescience