Amplify Force and Motion

How an object changes velocity depends on the direction of the force exerted on that object.

• True

• False

A stronger force can cause a ______ change in velocity.

• weaker

• equal

• greater

• forces do not change the velocity of an object

Tags

NGSS.MS-PS2-2

When two objects collide, both objects experience the same amount of force. How each object responds after the collision depends on what?

• How much velocity each object has.

• How much friction affects each car.

• How much mass each object has.

• How much matter was lost in the collision.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

When in a collision both objects receive an equal force strength but the forces are exerted in ______ directions.

• forward

• backward

• opposite

• same

Tags

NGSS.MS-PS2-1

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

• Speed

• Acceleration

• Velocity

• Inertia

Tags

NGSS.MS-PS3-1

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

• Pushes

• Pulls

• Slides

• Friction

Based on our investigations in class, which claim is better supported by evidence?

• Claim 1: The thrusters caused the pod to move in the opposite direction.

• Claim 2: The thrusters only slowed the pod, it didn't stop; the pod hit the space station, which made it bounce and move in the opposite direction.

• Neither claim is supported by evidence.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What is wrong with this collision model?

• The velocity of the objects should be in the same direction.

• The force arrows should be in the same direction and equal size.

• The force arrows should be the same size or equal strength.

• Nothing is wrong with this collision model.

Tags

NGSS.MS-PS2-1

What is energy ?

• a set of interacting parts forming a complex whole

• a claim supported by evidence

• the ability to make things move or change

• a proposed answer to a question about the natural world

Three chairs were rolling across a flat office floor. The blue and red chairs are the same mass, and they have more mass than the yellow chair. Each chair was hit by another chair, but not from the same direction. Use the information in the diagram to answer. Which chair(s) experienced the strongest force when hit? How do you know?

• The BLUE and RED chairs experienced the strongest force because they are both more massive than the yellow chair and they changed speed by the both more massive than the yellow chair and they changed speed by the same amount.

• The RED chair experienced the strongest force because it is as massive as the BLUE chair and has the highest ending speed.

• ALL THREE CHAIRS experienced the same force because they changed speed by the same amount.

• The BLUE chair experienced the strongest force because it takes more force to slow an object than it takes to make it go faster.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2