Question

Nina, whose mass is 75kg, is traveling on a bike at 23m/s at the top of 5m hill. Assuming friction is negligible. How fast is Nina traveling at the bottom of the hill?

Answer 1

Answer:

V = 24 m/s

At the top of the hill, total energy

T. E. = 1/2mv^2 + mgh

= 19837.5 + 1875

= 21712.5

At the bottom

T. E = K. E.

21712.5 = 1/2 m V^2

V = 24 m/s