Question

What is the cause of heat generation in the following situations:
1.We apply brakes on our fast moving car.
2. people often jump up and down to feel warmer in cold weather.

short answer​

Answer 1

Answer:

1.

Explanation:

is the correct answer

Answer 2

QUESTION :

Q. What is the cause of heat generation in the following situations:

1. We apply brakes on our fast moving car.
2. People often jump up and down to feel warmer in cold weather.

ANSWER :

Ans. 1.

➜ While moving in a fast motion of a moving body there a pair of forces are taking place i.e., Friction from forward of the moving car to decrease the speed and another can be called as Muscular force acting to move the car forward

HENCE,

• The cause of heat while applying brakes is Friction because of its interlocking of particles between the ground and the tires.

Ans. 2.

➜ We usually do exercise(jump and down) for get rid of cold in winter ❄️. Our body performs an action to produce heat to keep our body warm while doing any exercise. It refers to an anaerobic - respiration.

NOTE :

• Read it carefully.

• Refer to attachment.