Question

8. From the picture in question 4, if the ball has a mass of 4 kg and is rolling at 4.4 m/s at the

bottom of the hill, how tall is the hill?
PEg=m.g.h
PE=98J
g= 4.4m/s
m=4kg
h=?

Answer 1

0.981m

Step-by-step explanation:

KE = 1/2*m*v^2

= 1/2 * 4 * 4.4^2

= 38.72 J

assuming no energy is lost

KE = GPE

m * g * h = 38.72

4 * 9.8 *h = 38.72

h= 0.981 m