Question

A child and a sled with a combined mass of 50.0kg slide down a frictionless slope. If the sled starts from rest and has a speed of 3.00m/s at the bottom, what is the height of the hill?

Answer 1

change in kinetic energy is going to equal change in gravitational potential energy.\[\Delta K=1/2 mv^2\] \[\Delta U_g=mg \Delta x\]

Answer 2

Which numbers would I plug into the equation @gollywolly

Answer 3

\[1/2(50.0)(3.00)^2=(50.0)(9.81)\Delta x\]

Answer 4

Thank you so much! @gollywolly

Answer 5

No problem. Do you understand why that works? @daisy_arlene

Answer 6

Yeah, somewhat @gollywolly

Answer 7

U can solve this problem in another way

Answer 8

v^2=u^2+2gh

Answer 9

h=?

Answer 10

Given u=0

Answer 11

v=3m/s