Give reasons for the following:
(a) When a ball is dropped from a height, its speed continuously increases.
(b) When we stop pedaling a bicycle, its speed slows down.
(c) When a tree is shaken vigorously, its fruits and leaves fall down.
Answers
Answer:
your answer is here !
Explanation:
(a) When a ball is dropped from a height, its speed continuously increases due to force of gravity (as the acceleration due to gravity increase on coming downwards).
(b) When we stop pedaling a bicycle, its speed slows down due to air resistance and force of friction between the tires of bicycle and surface of road. So retardation force is created which causes a decrease in the speed of bicycle.
(c) When tree is shaken, it moves to and fro slightly but its fruits and leave tends to remain at rest due to their inertia and hence get detached from the tree and fall down.
follow me !
Explanation:
(a) When a ball is dropped from a height, its speed continuously increases due to force of gravity (as the acceleration due to gravity increase on coming downwards).
(b) When we stop pedaling a bicycle, its speed slows down due to air resistance and force of friction between the tires of bicycle and surface of road. So retardation force is created which causes a decrease in the speed of bicycle.
(c) When tree is shaken, it moves to and fro slightly but its fruits and leave tends to remain at rest due to their inertia and hence get detached from the tree and fall down.