Ask a New Question

a girl of mass 40 kg is skating at a constant speed of 1 m/s. supposed she doubles her speed, how much work will be needed to double her speed?

2 answers

Four times as much, since Kinetic Energy is proportional to V^2.

afsefedrhythyt

Ask a New Question or answer this question.

Similar Questions

The figure shows a girl and a boy each exerting a force to move acrate horizontally a distance of 13 m at a constant speed. The
1. 1 answer
John and Mary are skating at an ice rink. John skates at a constant speed of 6.7 m/s, with respect to the ice surface, directly
1. 1 answer
A girl of mass 60 kg throws a ball of mass 0.8 kg against a wall. The ball strikes the wallhorizontally with a speed of 11 m/s,
1. 2 answers
A girl of mass 55 kg throws a ball of mass 0.8 kg against a wall. The ball strikes the wall horizontally with a speed of 25 m/s,
1. 4 answers

more similar questions