Motion and Forces Review Questions
Terms in this set (25)
When an objects distance from another object is changing.
A place or object used to determine whether something is in motion or not.
Distance divided by time
Speed in a given direction
Speeding up, slowing down, or changing direction
the rate at which velocity changes
A push or a pull
The total force acting on an object in any interaction.
When two forces act in the same direction
When two forces act in opposite directions,
you subtract to find the next force
when the net forces acting on an object equal zero
the force that pulls objects to Earth
A bodies tendency to resist a change in motion
Newton's 2nd Law
Force = Mass x Acceleration
The greater an objects mass, the greater its...
The force that one surface exerts on another when the two surfaces rub against each other
Newton's 3rd Law
For every action there is an equal and opposite reaction.
Newton's 1st Law
An object in motion will stay in motion and an object at rest will stay at rest until acted on by an outside force.
The amount of matter in an object
Another name for Newton's 1st law
Law of Inertia
Newton's 2nd Law is also known as the
Law of Acceleration
You are riding a bike and suddenly hit a rock which causes your bike to stop. Which of Newton's laws explain WHY your body flew forward?
Newton's 1st Law or Law of Inertia
Which laws explain why a canoe goes forward when you push the paddle backwards?
Newton's 3rd Law
Which law explains why you skate faster when you push harder with your leg muscles?
Newton's 2nd law
What forces keep everything on Earth from floating up?
gravity, friction, normal force
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