Force and Motion

The motion of a toy car is shown in the graph.

In which section of the graph is the car moving away from its starting point?

• W

• Z

• Y

• X

Tags

NGSS.MS-PS3-1

Two toy cars are traveling on a track.

Thirteen minutes after they start, how do the speeds of the cars compare?

• Both cars have stopped moving on the track.

• Car 1 is moving faster.

• Both cars are traveling at the same speed.

• Car 2 is moving faster.

Tags

NGSS.MS-PS3-1

A bowling ball sitting motionless on a table exerts a downward force on the table. The force exerted by the table must be

• continually changing with the ball.

• equal to the force of the ball.

• greater than the force of the ball.

• less than the force of the ball.

Tags

NGSS.MS-PS2-1

If a book sitting on a flat table starts to move horizontally, it is most likely moving because

• a balanced force is being applied.

• a frictional force is being exerted.

• a gravitational force is being exerted.

• an unbalanced force is being applied.

Tags

NGSS.MS-PS2-2

The best example of balanced forces is a

• car increasing speed.

• bus parked in a garage.

• ball kicked along a flat surface.

• roller coaster slowing down on an incline.

Which graph could represent a car moving at a constant speed in a forward direction?

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• 
• 
• 

Tags

NGSS.MS-PS3-1

The graph shows the motion of four cars. All four cars are moving east.

Which car has a constant velocity?

• 1

• 3

• 2

• 4

Tags

NGSS.MS-PS3-1

In a game of tug-of-war, the people on each team pull with the amount of force shown.

In which direction will the center of the rope go?

• to the west because the net force is greater in this direction

• to the east because the net force is greater in this direction

• to the west because the net force is less in this direction

• to the east because the net force is less in this direction

Tags

NGSS.MS-PS2-2

In the diagrams the arrows represent forces exerted on the boxes. Which diagram represents a box that will remain stationary?

• 
• 
• 
• 

Tags

NGSS.MS-PS2-2

A toy car starts at the top of a ramp, rolls down and slows to a stop.

Which acts most to bring the car to a stop?

• wind speed

• electrical force

• magnetism

• friction

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-5