_______________________ is the tendency for an object to resist changes in motion.

A soccer ball rolling on a turf field will slow down and eventually stop because of...

Acceleration is a change in an object's __________________ over time.

True or False: Acceleration occurs only when objects speed up.

Newton's __________ Law of Motion states: For every action there is an opposite and equal reaction.

Newton's ___________ Law of Motion states: An object at rest will stay at rest and an object in motion will stay in motion unless acted on by a force.

Newton's ___________ Law of Motion states: An object's acceleration depends on the amount of force acting on the object and on the object's mass.

____________________ measures an object's speed and direction.

______________________ is the amount of matter in an object.

_________________________ is a force that acts against moving objects when two surfaces touch.

True or False: Objects with more mass have more inertia.

Which Law of Motion does this example describe?

Bowling pins will not move until a force from a moving ball acts on them.

Which Law of Motion does this example describe?

The more mass a dogsled has, the more force the dogs must use to make the sled accelerate.

Which Law of Motion does this example describe?

When an oar pushes the water, the water pushes back on the oar.

Which Law of Motion does this example describe?

It takes less force to pull an empty wagon than a wagon with someone in it.

Which Law of Motion does this example describe?

A car accelerates faster than a truck.

Which Law of Motion does this example describe?

The harder you hit a tennis ball, the faster it will travel.

Which Law of Motion does this example describe?

A firefighter turns on a hose and is knocked backwards.

Which Law of Motion does this example describe?

The air is let out of a balloon, and it flies around the room in the opposite direction.

Which Law of Motion does this example describe?

A swimmer pushes back on the water and moves forward.

True or False: The greater the force applied, the greater an object's acceleration.

True or False: The greater an object's mass, the less force needed to accelerate the object.

True or False: Inertia keeps an object steady whether it is in motion or at rest.

True or False: When two objects with unequal (different) masses collide, even though their forces are the same, one will accelerate more than the other.

Which Law of Motion does this example describe?

Your seat belt on a plane acts as a force to keep your body from moving forward once the plane has landed and is no longer in motion.

Which Law of Motion does this example describe?

When a bus stops suddenly, the riders keep moving forward because their bodies were in motion.

Which Law of Motion does this example describe?

A hockey puck will keep moving until the goalie blocks it, which stops it.

True or False: Friction is a contact force.

True or False: Contact forces occur at a distance, meaning that the objects don't touch.

Which of these is a contact force?

A(n) _____________ is a push or pull.