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Please help it's for a test that is due right now. A car of mass 1000kg is traveling 30m/s a) What is the kinetic energy? b) How high will it have to travel up a hill to have the same potential as kinetic
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1 vote
1 vote
Please help it's for a test that is due right now.

A car of mass 1000kg is traveling 30m/s

a) What is the kinetic energy?

b) How high will it have to travel up a hill to have the same potential as kinetic energy as this speed? Remember Ep-Ek ​

User Horyun Lee
by
2.0k points

1 Answer

25 votes
25 votes

Answer:

a. 15,000J

b. .76m

Step-by-step explanation:

KE = (1/2)m*v²

KE = .5*1000kg*30m/s

KE = 15000J

PE = m*g*h

7500J = 1000kg*9.81m/s²*h

7500J = 9810*h

h = .76m

User Wpnpeiris
by
2.9k points
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