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## Homework Statement

Some gliders are launched from the ground by means of a winch, which rapidly reels in a towing cable attached to the glider. What average power must the winch supply in order to accelerate a 189-kg ultralight glider from rest to 20.5 m/s over a horizontal distance of 52.2 m? Assume that friction and air resistance are negligible, and that the tension in the winch cable is constant.

## Homework Equations

the formula for power = Work/ time

the formula for work = force x distance

## The Attempt at a Solution

work= force x distance

= 189 x 9.8 x 52.2

=96684.84

then to find power= 96684.84 / time ?

do I use the velocity to find the time?

so it would be t= 52.2m/20.5 m/s

= 2.54 seconds?

is this correct? i'm confused as how to do this