P5 Science Final Exam Review

1. Which of the following best describes a force?

• A type of machine

• A type of energy

• The speed of an object

• A push or pull that can change the motion of an object

1. Force is a push or pull that can change the motion of an object.

• TRUE

• FALSE

1. What is the unit used to measure force?

• Gram

• Kilometer

• Newton

• Joule

Meter is the unit of force.

• TRUE

• FALSE

If two forces of 15 N and 5 N are applied in opposite directions, what is the net force?

• 10 N

• 20 N

• 30 N

• 40 N

A force of 5 N to the left and 10 N to the right results in a net force of 5 N to the right.

• TRUE

• FALSE

What type of surface creates low friction?

• Bumpy surfaces

• Wet surfaces

• Rough surfaces

• Smooth surfaces

Sliding friction occurs when an object is moved along a surface.

• TRUE

• FALSE

If you apply a force of 25 N to the right and 10 N to the left, what is the net force?

• 5 N to the right

• 5 N to the left

• 10 N to the right

• 10 N to the left

Net force is the combination of all the forces moving on an object.

• TRUE

• FALSE