Question

Q5. A cyclist travels down a hill from rest at point X, without pedalling. He applies his brakes and the cycle stops at point Y.

Which energy changes have taken place between X and Y?

A) kinetic energy-> heat energy-> gravitational potential energy.

B) gravitational potential energy -> heat energy-> kinetic energy.

C) kinetic energy-> gravitational potential energy-> heat energy.

D) gravitational potential energy-> kinetic energy-> heat energy.​

Answer 1

B

Step-by-step explanation:

At highest point gravitational energy is higher. While coming down without paddle it starts to gain heat energy and once it reaches the ground the kinetic energy is higher.

I hope my answer helps you.