Question

a 55kg skater is speeding towards a ramp. if the skater reaches a height of 0.8m before coming to a stop, how fast was the skater going in the beginning? ignore any friction.

Answer 1

3.96 meters / sec

Step-by-step explanation:

The skaters Kinetic Energy is converted to Potential Energy ( ignoring friction)

KE = PE

1/2 * 55 * v^2 = 55 * 9.81 * .8

solve for v = 3.96 m/s