Question

2.
heat normally take place
What is the cause of heat generation in the following situations,
(a) We apply brakes on our fast moving car.
(b) People often jump up and down to feel warmer in cold weather.
State two types of physical changes that may the
3​

Answer 1

Answer:

(a) it Mai be burnt.............

Answer 2

Answer:

a.When brakes are applied on our fast moving car, the brakes produce heat due to friction.

b.People often jump up and down in cold weather to feel warm because the body produces heat while jumping, this heat keeps them warm