Physics, asked by nafeesndon, 7 months ago

1. A car is accelerated on a levelled road and attains a velocity four times its initial velocity. In this
process, how does the potential energy of the car change?
2. A rocket is moving up with a velocity v. If the velocity of this rocket is suddenly tripled, what will
be the ratio of two kinetic energies?
3.
A car of mass 900 kg is travelling at a steady speed of 30 m/s against a resistive force of 2000 N,
(i) Calculate the kinetic energy of the car.
(ii) Calculate the energy used in 1.0 s against the resistive force.
(iii) What is the minimum power that the car engine has to deliver to the wheels
4. Calculate the work done in lifting 200 kg of a mass through a vertical distance of 6 m.
5. The weight of a person on a planet A is about half of that on the Earth. He can jump up to 0.4 m
high on the surface of the Earth. How high can he jump on planet A?

Answers

Answered by Leisha01
0

Answer:

No idea dude. Brain fused

Explanation:

please mark this as the brainliest answer

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