Mechanical energy test

___________________ is the sum of kinetic and potential energy.

• kinetic energy

• mechanical energy

• potential energy

• distance

The energy of motion is __________ energy.

• kinetic

• potential

• mechanical

• distance

The energy stored in an object is ______________energy.

• mechanical

• kinetic

• distance

• potential

the equation for gravitational potential energy is 

• PE_g = mgh
• PE_g= 1/2kx²
• PE_g= Fd
• PE_g = 1/2mv²

Tags

NGSS.MS-PS3-2

A 70 kg runner has a velocity of 5 m/s. Her kinetic energy is

• 875 J
• 175 J
• 1750 J
• 350 J

Tags

NGSS.MS-PS3-1

Which of the following objects has the most kinetic energy?

• A 20 kg toddler running at 5 m/s
• A 50 kg toddler running at  30 m/s
• A 90 kg toddler running at 30 m/s
• A 100 kg  toddler running at 2 m/s

Tags

NGSS.MS-PS3-1

A 5 kg ball is lifted 12 m above the ground. It's gravitational potential energy is

• 60 J
• 600 J
• 17 J
• 2.4 J

Tags

NGSS.MS-PS3-2

You drop a 5 kg ball from a height of 2 m. Just before it reaches the ground, what is the ball's velocity?

• 6.32 m/s
• 40 m/s
• 4.47 m/s
• 100 m/s

Tags

NGSS.MS-PS3-5

NGSS.MS-PS2-2

NGSS.MS-PS2-4

A 2 kg ball has an initial velocity of 6 m/s. How high up the ramp will it go?

• 1.8 m
• 10 m
• 6 m
• 12 m

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-2

NGSS.MS-PS3-5

How much kinetic energy (K) does a baseball with a mass of 0.143 kg have if it is travelling at a velocity of 41.1 m/s?

HINT: K = 1/2mv²

• 120.8 joules

• 89.7 joules

• 108.3 joules

• 156.6 joules

Tags

NGSS.MS-PS3-1