Forces and Motion Test Review

The image below shows two opposite forces acting on a rope, what can we say is true about the affect of the forces on the rope?

• It cannot be determined without knowing which man is stronger.

• The forces are not balanced, because one man is standing taller than the other.

• The forces are balanced. But, the forces acting on the rope have increased and the rope’s motion is affected.

• The forces are balanced. Thus, there is no change in forces acting on the rope and the rope’s motion is not affected.

The image below shows two opposite forces acting on a rope, what can we say is true about the affect of the forces on the rope?

• The forces are unbalanced. The net force on the rope moves it to the left.

• The forces are unbalanced. The net force on the rope moves it to the right.

• The forces are balanced because one man is standing taller than the other.

• It can not be determined without knowing which man is stronger.

Which of the following free-body diagram represents a skydiver falling downward at terminal velocity.

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What is the amount of matter in an object called?

• mass

• friction

• volume

• weight

What is a force?

• A push or pull

• A push only

• A pull only

• None of the above

What unit do scientists use to measure force?

• Grams

• Newtons

• Joules

• Meters per second squared

What is the net force on the box shown below?

• 10 Newtons to the right

• 10 Newtons to the left

• 60 Newtons to the left

• 110 Newtons

When you slide a box across the floor what force must your push be stronger than?

• Support Force

• Friction Force

• Air Resistance

• Tension Force

What force always pulls downward on objects?

• Tension

• Normal

• Gravity

• Friction

Which ball will hit the ground first if dropped at the same time and at the same height if air resistance did NOT affect this scenario?

• Metal first, then plastic, then wood last.

• Wood first, then plastic, then metal last.

• No way to tell.

• They will all hit the ground at the same time.