# GENERAL KNOWLEDGE

## GK

### GENERAL SCIENCE

 Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A ball was rolling fast and then slowed. Which most likelycaused the ball to slow?
 A heat B friction C momentum D wind
Explanation:

Detailed explanation-1: -Answer 5: Friction-as the ball rolls, the ball loses its energy to heat and sound. As the energy is lost, the ball slows down and eventually stops.

Detailed explanation-2: -A ball rolling on a horizontal surface slows down as it rolls, due to rolling friction. The friction force is due to static friction so no net work is done by that force, and it does not act to dissipate energy.

Detailed explanation-3: -Rolling friction hinders the motion of an object rolling along a surface. Rolling friction slows down a ball rolling on a basketball court or softball field, and it slows down the motion of a tire rolling along the ground.

Detailed explanation-4: -The surface of the ball and the ground are in contact with each. Therefore as the ball moves on the ground, a frictional force is applied to the ball from the ground which slows it down.

There is 1 question to complete.