Chapter 4 Exam "Work and Energy"

True or false:  At the peak of the lift hill, a rollercoaster car has more potential energy than any other form of energy.

• True
• False

Tags

NGSS.MS-PS3-2

The gravitational force of any object near Earth's surface is ____.

• unknown
• friction
• Newton's first law
• 9.8 m/s²

When a pendulum swings, at which point is kinetic energy highest?

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Girl serving a volleyball

• Potential
• Kinetic

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

What is the equation for mechanical advantage?

• MA=input force*output force
• MA=output force/input force
• MA=input force/output force
• MA= output force - input force

if a load of a lever is 100 newtons and the force you apply is 20 newtons, what is your mechanical advantage?

• 120 N
• 5 N
• 2000 N
• 80 N

Is this an example of work?
A teacher applies a force to a wall and becomes exhausted.

• True
• False

energy of position

• potential energy
• kinetic energy

Tags

NGSS.MS-PS3-2

A ball rolling down the hill is an example of ___ energy.

• kinetic
• potential

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

How much work is produced when 350 N is used to move a car 5 m (W=Fd)?

• 70 J
• 1750 J
• 355 J
• 175 J