Question

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

Answer 1

Answer:

dear friend I suggest it would be friction... I hope it works

Answer 2

A first we apply brakes on our fast moving car the heat is generated due to the friction between road and the tyre

B people often jump up and down to feel warmer in cold weather the heat is generated due to do to increasing in blood circulation and respiration