Forces and Motion

A group of students performed an investigation with toy cars. They applied a force on the toy cars and measured the time it took the cars to move through a 10-meter distance. The data from their investigation in shown.

What question were they most likely trying to answer?

• Does the mass of a car affect the distance the car travels?

• Does the distance the car travels affect the time?

• Does the force on a car affect the change in motion?

• Does the mass of a car affect the distance the car travels?

Tags

NGSS.MS-PS2-2

Shown is the graph of the motion of a car.

Which of the following best explains the motion of the car represented by section "D" of the graph?

• The car is going faster than it was in section "B"

• The car is stopped in section "D"

• The car is moving on level ground in section "D"

• The car is higher than it was in section "B"

Tags

NGSS.MS-PS3-1

A fifth grade class has a model car race. The students were divided into 4 groups. Each group built a model car for the race. Below are the results of the race.

Which car won the race?

• Car 1

• Car 2

• Car 3

• Car 4

Tags

NGSS.MS-ETS1-3

The model shows forces acting on a box when it is sliding down the ramp.

What would most likely happen to the motion of the box if you poured oil on the ramp?

• It will slow the box because the force of friction will be increased.

• It will speed up the box because the force of friction will be increased.

• It will slow the box because the force of friction will be reduced.

• It will speed up the box because the force of friction will be reduced.

Tags

NGSS.MS-PS2-2

Shown are two magnets.

Which of the following best explains what magnet "B" will do if it is free to move.

• The force of gravity will pull it to the left.

• The magnetic force will pull it to the left.

• The force of gravity will push it to the right.

• The magnetic force will push it to the right.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

A student drew the model car shown for a class project.

What was he most likely trying to model?

• The speed of a car

• The forces acting on a car

• The distance a car might move

• The things that change the size of the car

Tags

NGSS.MS-PS2-2

NGSS.MS-ETS1-4

NGSS.MS-PS2-1

If an unbalanced force acts on an object at rest, the object will move in the direction of the force. Which of the following best models an object with unbalanced forces acting on it?

• 
• 
• 
• 

Tags

NGSS.MS-PS2-2

A student wished to design an investigation to determine the effect of changing the mass of an object when an unbalanced force is applied the object.

What should she use as the independent variable in her investigation?

• Time

• Force

• Mass

• Speed

Tags

NGSS.MS-PS2-2

A student did an investigation to see how changing the mass of an object would affect the distance it would take to stop. Shown is the data from his investigation.

How should he make the graph of his data?

• He should make a line graph with mass on the "X" axis and distance on the "Y" axis.

• He should make a line graph with mass on the "Y" axis and distance on the "X" axis.

• He should make a bar graph with mass on the "X" axis and distance on the "Y" axis.

• He should make a bar graph with mass on the "Y" axis and distance on the "X" axis.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

A group of students want to test the effect of balanced forces on the motion of objects with different masses. They conducted trails with 10-gram, 20-gram, and 30-gram blocks. They applied 100 Newtons of force to each side of the blocks as shown in each trial.

Which hypothesis will most likely be supported by the results of the investigation?

• When a balanced force is applied the block with the greatest mass will move fastest.

• When an unbalanced force is applied the block with the least mass will move fastest.

• When a balanced force is applied the speed of an object will not change.

• When an unbalanced force is applied the speed of an object will not change.

Tags

NGSS.MS-PS2-2