Question

Select ALL of the following statements that provide evidence that there is friction acting on a cart moving along a level track. [you can pick more than one answer!]
The cart slows down while moving down the track

The cart's speed increases only when the hand is in contact with the cart

The temperature of the track increases as the car moves over it

The wheels are warmer after the cart moves down the track

Answer 1

Answer:

1st and 4th one................