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Explain terms: a. Free fall b. Acceler...

Explain terms:
a. Free fall b. Acceleration due to gravity
c Escape velocity d. Centripetal force
e. Potential energy

Text Solution

Verified by Experts

a. Free fall:
When a body falls towards the Eath under the influence of the Earth's gravity alone, its motion is called free fall.
b. Acceleration due to gravity:
The gravitational force due to earth on a body results inits acceleration. This is called acceleration due to gravity.
c. Escape velocity:
The minimum initial velocity needed by an object projected upwards, to overcome Earths gravitational force and not fall back on Earth is called escape velocity.
d. Centripetal force:
d. Centripetal force:
The force that acts on any object moving along as circle, directed towards the centre of the circle is called centripetal force.
e. Potential energy:
The energy possesed due to position or configuration is called potential energy.
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