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ryzh [129]
3 years ago
15

Takes 5 seconds and 2,000 J for a crane to lift a very heavy object. Which of these correctly describes power and energy for thi

s action?
2,000 J of energy was converted into some other energy, requiring 10,000 W of power.
2,000 J of energy was converted into some other energy each second, requiring 400 W of power
2,000 J of power was converted into 400 W of energy.
2,000 J of power was converted into some other power every second, requiring 10,000 W of energy.
Physics
1 answer:
strojnjashka [21]3 years ago
8 0

Answer:

D

Explanation

take 5x2000 and J is the unit for power therfore it cant be A and B and C are not 10,000.

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v_{f}=14.69 m/s

The final velocity of the car at the end of 75 m is 14.69 m/s

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