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kotykmax [81]
3 years ago
10

A man pushes a boulder with a mass of 50kg from rest to a final velocity of 3

Physics
1 answer:
professor190 [17]3 years ago
4 0

Answer:

Power = 56.25 W

Explanation:

Power = workdone/time taken

We are given;

Mass; m = 50 kg

Final velocity; v = 3 m/s

Time; t = 4 s

Workdone = ½mv² = 1/2 × 50 × 3²

W = 25 × 9

W = 225 J

Thus;

Power = 225/4

Power = 56.25 W

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Ganezh [65]

Answer:

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Explanation:

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4 0
2 years ago
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9966 [12]
The force equation can easily prove this.  F=ma.  This states that the force on an object is equal to mass times acceleration.  If the mass stays the same and the velocity of the cars increases than that means there is a larger force.  This is because in both cases the cars are stopping in almost an instant and the times of the crashes are theoretically identical.  Acceleration is the change in velocity over time.  If the velocity is higher with the same amount of time than that means there is a higher acceleration.  If you plug a higher acceleration into the force equation then you wind up with a higher force and in turn a more damaging collision.
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3 years ago
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Goshia [24]

Answer:

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800 meters per hour is the average speed of an airplane that travels from New York to Los Angeles, a total distance of 4800 km, in 6.0 hours.

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Greeley [361]

Answer:

Hope this helps u, pls mark me brainlist

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