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प्रश्न
State whether the following statement is true or false :
Unbalanced forces acting on a body change its shape.
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उत्तर
False, unbalanced forces acting on a body changes its speed or its direction of motion, but does not change its shape.
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संबंधित प्रश्न
What is the usual name of the forces which cannot produce motion in a body but only change its shape ?
Name the unbalanced force which slows down a moving bicycle when we stop pedalling it.
Fill in the following blank with suitable word:
When a running car stops suddenly, the passengers are jerked …………………..
Fill in the following blank with suitable word :
When a stationary car starts suddenly, the passengers are jerked …………………..
Give one example where a force moves a stationary body.
What type of forces – balanced or unbalanced – act on a rubber ball when we press it between our hands ? What effect is produced in the ball ?
A 1000 kg vehicle moving with a speed of 20 m/s is brought to rest in a distance of 50 metres :
(i) Find the acceleration.
(ii) Calculate the unbalanced force acting on the vehicle.
Give one example where a force stops a moving body .
A boy of mass 50 kg standing on ground exerts a force of 500 N on the ground. The force exerted by the ground on the boy will be :
Why does it happen?
If a stationary bus suddenly speeds up, passengers are thrown in the backward direction.
