Motion

Front

Which graph shows an object slowing down? (Hint: speed vs time graph)

Back

Front

If the unequal opposing forces are applied to the cart at the same time, what will occur?

Back

The cart will move to the right.

Answer explanation

360-270=90 to the right

Front

Which statement best summarizes the scientific concept shown in the cartoon? Options: A falling body accelerates at a constant speed. The motion of an object is constantly changing due to magnetic forces. The force of friction causes an object in motion to move faster. A body in motion will remain in motion unless influenced by an outside force.

Back

A body in motion will remain in motion unless influenced by an outside force.

Answer explanation

1st law of motion, object in motion will continue moving unless there is a force that acts on it.

Front

An object accelerates at 3 m/s² when a 10 N force is applied. Which force would cause it to accelerate at 6 m/s²?

Back

20 N

Answer explanation

If 3 m/s2 -> 10 N

then 6 m/s2 -> 20 N

Front

Why does the sprinkler spin when water is sprayed through it?

Back

Every action has an equal and opposite reaction.

Answer explanation

3rd law, action/ reaction, water goes one direction then the hose will go the other direction, making the sprinkler spin.

Front

In which diagram would the block of wood have the greatest acceleration? Options: , , ,

Back

Answer explanation

Use F=ma

Front

Which car traveled at an average speed of 20 kilometers per hour? Options: A, B, C, D

Back

B

Answer explanation

speed = distance/ time

60 / 3 = 20

Front

Which object would have the greatest force?
Options:
a 5-kg object accelerating at 10 m/s²,
a 5-kg object accelerating at 20 m/s²,
a 20-kg object accelerating at 4 m/s²,
a 20-kg object accelerating at 3 m/s²

Back

a 5-kg object accelerating at 20 m/s²

Answer explanation

F= ma, 5x20 = 100 N

Front

A student pushes against a tree with a force of 10 newtons (N). The tree does not move. What is the amount of force exerted by the tree on the student?

Back

10 N

Answer explanation

Balanced force

Front

During which time interval was the runner moving at the greatest average speed? Options: 0–5 minutes, 10–15 minutes, 15–20 minutes, 25–30 minutes

Back

0–5 minutes

Answer explanation

the line is more steep during that time interval