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astraxan [27]
2 years ago
14

A weight lifter does 700J of work on a weight that he lifts in 3.1s. What is the power with

Physics
1 answer:
IgorLugansk [536]2 years ago
8 0

Power = Work done/Time taken

So, keeping this in mind,we can solve it as follows:

= 700/3.1

= 7000/31

= 225.80 W

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Answer:

C) 6 m/s

Explanation:

Given that

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m₂=10,000 kg

The initial velocity of 10000 kg car =u₂ = 0 m/s

After collision the final speed of the both car,v = 2 m/s

There is no any external force on the system that is why linear momentum will be conserved.

Linear momentum P = m v

m₁u₁ + m₂u₂ = (m₂ + m₁) v

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