Force & Motion Quiz

When you apply a strong force to an object in the same direction of its motion what will happen to the motion of the object?

• Slow down

• Change direction

• Stop

• Speed Up

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NGSS.MS-PS2-2

When you apply a strong force in the opposite direction to the motion of an already slow moving object what is the most likely change in motion?

• Speed up in the same direction of its current motion.

• Stop moving for a second and then begin to move again in the opposite direction.

• The object will change directions and continue moving.

• The object will not be affected by a strong force, only a weak force will make a difference.

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NGSS.MS-PS2-2

A stronger force can cause a ______ change in velocity.

• weaker

• equal

• greater

• forces do not change the velocity of an object

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NGSS.MS-PS2-2

Speed in a particular direction is ..... ?

• Speed

• Acceleration

• Velocity

• Inertia

What force causes all objects to slow down and then eventually stop?

• Pushes

• Pulls

• Slides

• Friction

At dinner, Hans passed the salt shaker to his sister Jessica by sliding it across the wooden table. The salt shaker gradually slowed down and stopped after moving 12 centimeters.

Why did the salt shaker stop moving?

• The salt shaker ran out of force.

• The table exerts a force that is opposite to the salt shaker’s motion.

• The table absorbs force from the salt shaker.

• All objects stop moving because their natural state is to be still.

Tags

NGSS.MS-PS2-2

Three toy boats with the same mass were in a lake. Two boats were moving and one was stopped. Each boat got bumped by another boat, but not in the same direction. All the boats changed speed as a result of being bumped. Use the information in the diagram to answer.

Which toy boat(s) experienced the strongest force when it was bumped? How do you know?

• blue toy boat - experienced the strongest force because it takes a stronger force to slow something down than it takes to speed something up.

• gray toy boat experienced the strongest force because it had the fastest ending speed.

• orange and gray toy boats experienced the strongest forces because they both gained the same force as they sped up. The blue boat lost force, so it slowed down.

• All three toy boats experienced the same strength force because they changed speed by the same amount.

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NGSS.MS-PS2-1

NGSS.MS-PS2-2

An object at rest stay at rest and an object in motion stays in motion until acted upon by an unbalanced force.

• Newton's 3rd Law

• Force

• Newton's 2nd Law

• Newton's 1st Law

The acceleration of an object as produced by net force. F = m*a

• Newton's 1st Law

• Motion

• Newton's 2nd Law

• Newton's 3rd Law

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NGSS.MS-PS2-2

For every action there is an equal and opposite reaction.

• Newton's 2nd Law

• Newton's 1st Law

• Newton's 3rd Law

• None of the above

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NGSS.MS-PS2-1