The weight of a person on a planet A is about half that on the earth. He can jump upto 0.4 m height on the surface of the earth. How high he can jump on the planet A?

Soln:

Person on Planet A can jump a height of 0.8 m because weight of person on plat A is half the weight that of earth. Hence acceleration due to gravity on planet A will also be half of that on earth.