The Nature of Force

A force is described as _______.

• A push

• A pull

• A push or a pull

• None of the above

What unit do scientists use to measure force?

• Newton

• Grams

• Meters

• Meter per second per second

What is the net force on the box shown above?

• 10 N to the left

• 10 N to the right

• 60 N to the left

• 50 N to the right

Which force always pulls downward on objects?

• Support force

• Support force

• Gravity

• Air resistance

The moon has a smaller mass than the Earth. If you were able to travel to the moon your weight would...

• Increase

• Decrease

• Stay the same

• Vary with day and night

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

• Support force

• Friction force

• Gravity

• Air resistance

Which ball will hit the ground first if dropped at the same time and at the same height in a perfect vacuum?

• Metal first, then plastic, then wood last

• Wood first , then plastic, then metal last

• They will all hit at the same time.

• There is no way to tell.

This test paper is sitting at rest on your desk. Which of the following statements best describes this situation?

• There are no forces acting on your paper

• Your paper pushes on the desk only.

• The desk pushes on your paper only

• The forces acting on the paper are balanced.

A change to an objects motion is caused by

• Balanced forces

• Acceleration

• Unbalanced forces

• Velocity