First Law of motion

A force is a ________________________ that acts on an object.

• a. push

• b. pull

• c. push or pull

• d. none of the above

A force that opposes, or pushes back against, an object moving past another object

• a. gravity

• b. friction

• c. inertia

• d. mass

An object's tendency to resist (not) change its state of motion.

• a. gravity

• b. force

• c. inertia

• d. friction

Two skaters begin at rest. Skater 1 has a smaller mass than Skater 2. After they push off each other,...

• a. Skater 1 experiences a greater change in momentum

• b. Skater 2 experiences a greater change in momentum

• c. Skater 1 has a greater velocity than Skater 2

• d. Skater 1 experiences a greater force

.

If net force acting on object is 0, then the force is considered to be.

• a. Balanced

• b. Unbalanced

• c. Equal in Direction

• d. Distance/Time

Which type of force(s) will cause a change in an object's motion?

• a. gravity

• b. zero net force

• c. balanced forces

• d. unbalanced forces

What is Newton's First Law?

• a. F=ma

• b. Every action has an equal and opposite reaction

• c. An object at rest stays at rest, an object in motion stays in motion.

• d. Friction

A person is pushed forward into their seat belt when a car stops. Which law is this?

• a. 1st

• b. 2nd

• c. 2 and 3

• d. 3rd

When a cannon fires a cannonball we observe Newton's third law. Which force is the reaction force?

• a. The cannon moving forward

• b. The cannonball moving forward

• c. The cannon moving backward

• d. The cannonball moving backward

If a force of 50 Newton's was applied to an object with a mass of 500 grams, what will the object's acceleration be?

• a. 10 m/s^2

• b. .1 m/s^2

• c. 100 m/s^2

• d. 1 m/s^2