- #1

- 45

- 0

## Homework Statement

A toboggan is initially moving at a constant velocity along a snowy horizontal

surface where friction is negligible. When a pulling force is applied parallel to

the ground over a certain distance, the kinetic energy increases by 47%. By what

percentage would the kinetic energy have changed if the pulling force had been

at an angle of 38° above the horizontal?

## Homework Equations

w= Fd cos theta

w= 1/2mv^2

## The Attempt at a Solution

so Ek = 1.47 Ek intial Ek = kinetic energy