Question

The escape velocity for a ball of mass 0.25kg will be: 1. A. 44 km /s 2. B. 11km/s 3. C. 2.75m/s 4. D. 0.25m/s

Answer 1

Given : mass = 0.25 Kg

To find : Escape velocity for a ball

Solution : Escape velocity is the minimum speed required by a body to escape the gravitational influence of a large body.

• It is given by formula as given below,

$V = \sqrt{2GM \div R }$

G = gravitional constant

• Hence putting value of mass and radius of the earth, we'll get

V = 11 km/s

Therefore escape velocity of ball is 11 km/s