Forces, Motion, Energy Test

If you have balanced forces, what is the net force?

• 0 N

• 30 N

• Opposites

• balance

Tags

NGSS.HS-PS2-1

If the force used to push a shopping cart increases, the cart's acceleration will

• decrease

• increase

• stays the same

• -30 N

Tags

NGSS.MS-PS2-2

In a car accident, a seat belt helps prevent injuries by applying a force

• less than the force of the moving passenger

• greater than the force of the moving car

• in the same direction as the car's motion

• in the opposite direction of the passenger's motion

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-3

What force always tries to slow things down or stop them?

• gravity

• acceleration

• friction

• inertia

True or false - centripetal force is the force that keeps objects moving in a circular path.

• True

• False

The force of gravity between two objects is greatest when

• Masses are small and the objects are close together

• Masses are small and the objects are far apart

• Masses are large and the objects are close together

• Masses are large and the objects are far apart

Tags

NGSS.MS-PS2-4

The upward force exerted on a floating object in water is called

• Normal force

• Gravity

• Friction

• Lift

A student wants to calculate the force of a falling object. The formula the student should use, according to Newton's second law of motion, is

• Inertia

• Balanced forces

Tags

NGSS.MS-PS2-2

Which word describes a push or pull on an object?

• Position
• Hypothesis
• Mass
• Force

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

A simple machine that consists a rigid bar that pivots on a fixed point

• lever

• pulley

• wheel and axle

• fulcrum

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1