Force and Motion

Which of the following causes an object to change directions?

• acceleration

• force

• velocity

• MOtion

Which describes the best relationship between mass, force, and acceleration?

• acceleration depends on the force applied and not on the mass.

• acceleration is inversely proportional to the mass when the force applied is constant.

• acceleration is independent of the force applied and the mass.

• acceleration is directly proportional to the mass when the force applied is constant.

Which will require more force to move?

• Something that is larger in size

• Something that is smaller in size

• Something that is made of more material

• Something that has more mass

If a cart is at rest and the force on one side is 10N, what is the force on the opposite side?

• 0N

• 20N

• 100N

• 10N

When building a bridge, it is important for the engineer to know about what type of force?

• unbalanced forces

• Friction Force

• Balanced forces

• opposing forces

A child left bucket in the rain. When he returned to get the bucket, he could not lift it. Why was the bucket hard to lift?

• The rain water increased the mass of the bucket and therefore increased the amount of force needed to lift it.

• The rain water decreased the mass of the bucket and therefore decreased the amount of force needed to lift it.

• the rain water decreased the force of gravity

• The rain water decreased the friction causing the bucket to get heavier

How do you control the force in an experiment with multiple trials?

• Make the ramp steeper with each trial

• Make the ramp smoother with each trial

• add more weight at the end of the ramp with each trial

• Keep the ramp the same with each trial

What inference can you make from this chart?

• acceleration decreases as the mass of an object increases.

• The amount of force required to accelerate an object is proportional to its mass.

• mass is directly proportional to its acceleration.

• acceleration is dependent on mass

What can you infer from the chart?

• a higher mass has more inertia which causes acceleration to decrease.

• a lower mass has less inertia which causes acceleration to decrease.

• a lower mass has more inertia which causes acceleration to increase.

• a higher mass has less inertia which causes acceleration to increase.

Which describes the objects motion?

• constant acceleration

• constant velocity

• acceleration increasing

• increasing velocity