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Andrew [12]
3 years ago
11

Please help it's for a test that is due right now.

Physics
1 answer:
Rus_ich [418]3 years ago
4 0

Answer:

a. 15,000J

b. .76m

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

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