You are In-line skates at the top of a small hill. Your potential energy is equal to 1000 J. The last time we checked, your mass was 60 KG. What is the height of the hill?

Question

Physics

Charlee Pratt

2 July, 10:16

You are In-line skates at the top of a small hill. Your potential energy is equal to 1000 J. The last time we checked, your mass was 60 KG. What is the height of the hill?

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Answers (1)

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Kaitlyn Mullen · Answer 1

A) Weight = mass * acceleration (due to gravity)

= 60*9.8

= 588 N

B) Potential energy = mass x gravity x change in height

1,000 = 60.0 x 9.8 x h

h = 1.7 m

C) Kinetic energyF = potential energyI

KEF = 1/2mv2

PEI = mgh = 1,000 J

1/2mv2 = 1,000

1/2 (60.0) v2 = 1,000

v2 = 33.33

v = 5.77 m/s