Question

your family decided to go on a family bike ride. you all get to the top of the highest hill in the neighborhood and decide to race home. which rider has the greatest kinetic energy? what will determine this? choose two
a the mass of the bike
b the type of pavement
c the mass of the rider
d the height of the hill
e the temperature outside

Explanation:

The kinetic energy of an object in motion (like a bike - rider system going downhill) is given by the formula $KE=\frac{1}{2}mv^{2}$. Mass ($m$) of the rider and bike affects the kinetic energy. Also, the height of the hill determines the potential energy at the top, which is converted into kinetic energy as the rider moves downhill. The type of pavement and temperature do not directly determine kinetic energy.

Answer:

C. the mass of the rider
D. the height of the hill