Question

a bobsled zips down an ice track, starting from rest at the top of a hill with a vertical height of 150m. disregarding friction, what is the velocity of the bobsled at the bottom of the hill? (g=9.81 m/s^2). show your work

Answer 1

Answer:

guess method

Explanation:

given: a:9.81m/s^2 h:150m

unknown: v

equation: pe= mgh ke=(0.5)mv^2

subsitute: gh=(0.5)v^2 (9.8m/s^2)(150m)=(0.5)v^2 =sqrt(2940m^2/s^2)= 54.2 m/s

solve: 54.2 m/s