Question

what is the cause of heat generation in the following situation a)we apply brakes on our fast moving car b) people often jump up and down to feel warmer in cold weather

Answer 1

When we apply brakes on fast moving car, the friction is created between the tyres and road this heavy friction wears out the tyre and generate heat.

While during jumping our blood flow gets fast, hearts getting beating up fast and this cause generation of heat.

Hope it helps u.

Answer 2

Explanation:

WHEN WE APPLY BREAK ON A FAST MOVING CAR THE FRACTION IS CREATED BETWEEN THE TYRES AND ROAD . THIS HEAVY FRICTIONS WEARS OUT OF THE TYRES AND GENERATE HEAT.

OUR BLOOD FLOW GETS FAST ,HEART GETT BEATING FAST AND THIS CAUSE GENERATION OF HEAT