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प्रश्न
Fill in the blank.
A moving football when kicked, its .................. changes.
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उत्तर
A moving football when kicked, its direction of motion changes.
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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 to be expressed correctly requires
State the effect produced by a force in the following case:
A player uses his stick to deflect the ball.
State the effect produced by a force in the following case:
A cyclist applies brakes
Name the type of force which act in the following case:
A boy opens the door
State if the following statement is true or false. Correct the statement if it is false.
Gravitational force is a contact force.
Answer the following in detail.
List all the forces acting on a boy sitting on a chair with the help of a suitable diagram.
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.
Two objects repel each other. This repulsion could be due to
Mention the factors on that the effect of a force depends.
