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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).
संबंधित प्रश्न
A stone is released from the top of a tower of height 19.6 m. Calculate its final velocity just before touching the ground.
A stone is thrown vertically upward with an initial velocity of 40 m/s. Taking g = 10 m/s2, find the maximum height reached by the stone. What is the net displacement and the total distance covered by the stone?
State whether the following statement is true or false :
The acceleration due to gravity acting on a freely falling body is directly proportional to the mass of the body.
What do you mean by the term free fall ?
Choose one or more correct alternatives.
Which of the forces involved in dragging a heavy object on a smooth, horizontal surface, have the same magnitude?
- The horizontal applied force
- gravitational force
- reaction force in vertical direction
- force of friction
A force of 15 N acts on a body of mass 2 kg. Calculate the acceleration produced.
A body falls freely under gravity from rest and reaches the ground in time t. Write the expression for the height fallen by the body.
What is escape velocity?
State whether the below statement is True or False.
Neglecting air resistance, a body falling freely near the earth's surface has a constant acceleration.
Write a short note.
Escape Velocity
