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प्रश्न
What is the acceleration of free fall?
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उत्तर
- When objects fall towards the Earth under the effect of gravitational force alone, then they are said to be in free fall.
- The acceleration of free fall is 9.8 m s−2, which is constant for all objects (irrespective of their masses).
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संबंधित प्रश्न
State whether the following statement is true or false :
A falling stone also attracts the earth.
During a free fall, will heavier objects accelerate more than lighter ones ?
Why does a sharp knife cut objects more effectively than a blunt knife ?
A stone is thrown vertically upwards with initial velocity u reaches a height ‘h’ before coming down. Show that the time taken to go up is the same as the time taken to come down.
What would be the value of ‘g’ on the surface of the earth if its mass was twice and its radius half of what it is now?
A force acts for 0.1 s on a body of mass 2.0 kg initially at rest. The force is then withdrawn and the body moves with a velocity of 2 m s-1. Find the magnitude of the force.
A car is moving with a uniform velocity 30 ms-1. It is stopped in 2 s by applying a force of 1500 N through its brakes. Calculate the following values : The retardation produced in car.
What force, in newton, your muscles need to apply to hold a mass of 5 kg in your hand? State the assumption.
What do you understand by the free fall?
When is free fall possible?
