Question

What are (1) free fall,(2) acceleration due to gravity,(3) escape velocity,(4) centripetal force​

Answer 1

Answer:

1.Free Fall

Downward movement under the force of gravity.

2. Acceleration due to Gravity

Gravitational acceleration is the free fall acceleration of an object in vacuum — without any drag. This is the steady gain in speed caused exclusively by the force of gravitational attraction.

3.Escape Velocity

The lowest velocity which a body must have in order to escape the gravitational attraction of a particular planet or other object

4.Centripetal Force

A force that acts on a body moving in a circular path and is directed towards the centre around which the body is moving.

Hope this helps you

Answer 2

Answer:

(1) Free fall - when a body falls towards the earth under the influence of the earth's gravity alone its motion is called free fall.

(2) Acceleration due to gravity - the gravitational force due to the earth on a body results in its acceleration. This is called acceleration due to gravity.

(3) Escape velocity - The minimum initial velocity needed by an object projected upwards to overcome earth's gravitational force and not fall back on earth is called escape velocity.

(4) Centripetal force - the force that acts on any object moving along a circle and is directed towards the centre of the circle is called centripetal force.

Explanation:

Hope this helps you....