Question

what is the cause of heat generstion in the followoing situations (a) we apply brakes on our fast moving car (b) people often jump up and down to feel
warmer in cold weather ​

Answer 1

Answer:

Explanation:

1. When we apply break, heat is generated due to the friction between brakes and wheels, that is responsible for stopping the brake.

2. When we jump up-down, our muscular energy is converted to heat energy by cells that is why we feel warm in cold weather.

Answer 2

Answer:

When brakes are applied on our fast moving car, the brakes produce heat due to friction. People often jump up and down in cold weather to feel warm because the body produces heat while jumping, this heat keeps them warm.

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