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Answer on Solid State Physics Question for Mcki

Question #67115
A rocket goes up at a velocity of 20m/s on the moon. If the gravity on the moon is 1.4m/s squared, then what velocity will the rocket hit the ground at?

A ball before it is thrown has a gravitational potential energy of 200j. It's kinetic energy when it is thrown into the air is 400j. What is the kinetic energy of the ball when it hits the ground?

Someone uses 8000j of force to lift 400kg 2m off the ground. What is the gravitational potential energy of the object?

A ball goes down a hill 5m in 1.5s. The average acceleration at the top of the hill is 3m/s squared. What is the final velocity and acceleration of the ball?
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