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प्रश्न
Write true or false.
The frictional force acts in the direction of motion of body
विकल्प
True
False
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उत्तर
False
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संबंधित प्रश्न
Write true or false.
A force can change the direction of motion of a moving body.
Select the correct alternative.
A force does not change
Give one example of force as a squeeze
Tick the most appropriate answer.
Which of the following is a contact force?
Fill in the blank.
The force acting on a mango falling from a tree is an example of .....................
Solve the following numerical problem.
Two force of 12 N and 25 N act on a body to the left-hand side, while another force of 35 N acts on it to the right-hand side. Find the resultant of the forces.
Give a reason for the following.
Boats and ships have streamlined shapes?
Two balls of the same size but of different materials, rubber and iron are kept on the smooth floor of a moving train. The brakes are applied suddenly to stop the train. Will the balls start rolling? If so, in which direction? Will they move at the same speed? Give reasons for your answer.
What is momentum? Write its SI unit. Interpret force in terms of momentum. Represent the following graphically
(a) momentum versus velocity when mass is fixed.
(b) momentum versus mass when velocity is constant.
A ball of dough is rolled into a flat chapatti. Name the force exerted to change the shape of the dough.
