Unit 7: Acceleration, Force, and Friction Test Review

If the forces on a ball are balanced, then ...

• the ball will slow down.

• the ball will continue moving at 3 m/s to the right.

• the ball will speed up.

• the ball will change the direction it is moving.

Tags

NGSS.HS-PS2-1

If a bike is moving to the east, then friction is acting on the bike to the ...

• east.

• west.

• north.

• south.

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NGSS.HS-PS2-1

Which force is NOT a fundamental force?

• friction

• strong nuclear force

• electromagnetism

• gravity

A soccer ball rolls from one player to another during practice. Which type of friction is acting on the ball?

• static friction

• rolling friction

• sliding friction

• No friction

To increase the friction between the road and the tires of a bicycle, you could ...

• carry an heavy item in the bike's basket.

• put sand on the road.

• install new tires on the bicycle.

• All of the choices are correct.

While driving to work, Kevin slams on his brakes and makes a sharp left turn. Which term most accurately describes his motion?

• constant velocity

• positive acceleration

• at rest

• negative acceleration

Tags

NGSS.HS-PS2-1

Which term accurately describes the forces shown in the diagram?

• Balanced forces

• Unbalanced forces

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NGSS.HS-PS2-1

Which of the following quantities is NOT a vector?

• speed

• displacement

• acceleration

• velocity

A motorboat travels towards the shore at a steady 22 mi/hr. Which statement is true?

• The motorboat is accelerating.

• The net force on the motorboat is 0 N.

• There are no forces working on the motorboat.

• The force of friction is greater than the applied force on the motorboat.

Tags

NGSS.HS-PS2-1

A heavy box needs to be moved over a floor. Which action would NOT help reduce the friction between the box and the floor?

• Take some items out of the box.

• Place the box on a wheeled cart.

• Polish the floor.

• All of the actions would reduce the friction.

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NGSS.MS-ETS1-1