Force and Motion 2023

What question were they most likely trying to answer?

• Does the mass of a car affect the change in motion?
• Does the force on a car affect the change in motion?
• Does the distance the car travels affect the time?
• Does the mass of a car affect the distance the car travels?

Which of the following best explains the motion of the car represented in 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”.

Which car won the race?

• Car 1
• Car 2
• Car 3
• Car 4

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.

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.

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 a car.

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

• time
• force
• mass
• speed

Is her investigation a fair test?

• No, because she has two responding (dependent) variables.
• No, because she has two manipulated (independent) variables.
• Yes, because she uses distance as a controlled variable.
• Yes, because she uses time as the responding (dependent) variable.

Which of the following best describes the data in the graph?

• Time is the dependent variable which is graphed on the “Y” axis.
• Time is the dependent variable which is graphed on the “X” axis.
• Distance is the dependent variable which is graphed on the “Y” axis.
• Distance is the dependent variable which is graphed on the “X” axis.

What is the first thing they should do according to the engineering design process?

• Adjust the wheels of the car and determine if it works better.
• Design a solution to make the wheels work better.
• Identify the problem that needs to be improved.
• Ask what materials they could use to fix the problem.