70.3k views
4 votes
A 3 kg ball is thrown into the air. It has an initial speed of 10 m/s. What is the ball’s gravitational

potential energy at the top of its motion? Bonus: what hieght does the ball reach

User RuslanBek
by
5.3k points

1 Answer

4 votes

Conservation of energy means that initial kinetic energy =maximum gravitational potential energy. 1/2 * 3 * 10^2 = 150J. The gravitational potential energy at the top is 150 joules. The gravitational potential energy is calculated through mgh, so 150 = 3 * 10 * h. Height is 5 meters

User K M Dilshan Udara
by
6.0k points