Acceleration and Intro to Forces

What will cause an object to move?

• Applied forces

• Balanced forces

• Unbalanced forces

The force that pulls things towards earth

• Speed

• Gravity

• Normal

• Air resistance

The unit of force is

• m/s

• m/s²

• Newtons

• kg

Acceleration is

• increasing speed
• decreasing speed
• changing direction
• all of the above

Which type of force(s) will cause a change in an object's motion?

• equal forces
• zero net force
• balanced forces
• unbalanced forces

A ____ force is the sum of forces felt by an object.

• sum
• net
• strong
• balanced

When two equal forces act in opposite directions on an object, they are called ______________________.

• frictional force

• balanced force

• centripetal force

• gravitational force

What is the net force?

• 400 N Up

• 400 N Down

• 800 N Up

• 800 N Down

when you sit on a chair the net external force on you is

• zero

• up

• down

• depends on your weight

The size of a force is called its

• Direction

• Magnitude

• Amount

• Sense