Question

12. The ball is thrown up, the value of 'g' will be
a.Zero
b.positive
c.negative
D.negligible

Answer 1

Answer:

The ball is thrown up, the value of 'g' will be c).negative

Answer 2

The ball is thrown up, the value of 'g' will be c. negative.

What is 'g'?

• It is the gravitational acceleration which is expressed in m/$s^{2}$.
• It is the acceleration due to gravity of earth/ground.
• It is a vector quantity and so depends on the direction in which it is applied.
• The magnitude of g on earth is 9.8  m/$s^{2}$ and the direction is towards the centre of earth.

When a ball is thrown up, the direction of g which is downwards is opposite to the motion of ball which is upwards. Hence, g is negative.