Question

A skier of mass 50 kg stands at A at the top of the ski jump .He takes off at A for his jump to B .caluclate the change in gravitational potential energy between A and B .

Answer 1

Dear student,
You havent provided any picture or diagram to show the points A or B.
But Iam solving this by taking ;
height of A = x
height of B = y

Now potential energy = mgh

Here its given that m =50 kg
we know g = 10 m/s^2

Now change in potential energy = PE at A -PE at B
= mg *height at A - mg *height at B
=50*10 * ( x-y)
= 500(x-y) joules

Substitute the value of x and y to get the final solution.