Question

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

Answer 1

Explanation:

Answer: if the ball is thrown upwards, thevalue of acceleration due to gravity willremain unchanged. Though it will be taken with negative(-) sign since the acceleration is against motion, but the value of g remains unchanged.

Answer 2

The value of 'g' will be b. negative.

What is 'g'?

• 'g' is the acceleration due to gravity of a particular planet.
• Any object on a planet is attracted towards the centre of planet with a force due to gravity called gravitational force.
• The acceleration with which the object is attracted towards earth is called gravitational acceleration and its value is 9.8 m/$s^{2}$ on earth.
• This value of acceleration depends on the planet in space. It has different values at different planets.

Direction of this gravitational acceleration is towards the centre of earth. When a ball is thrown upwards, the motion of ball is opposite to the force of gravitation exerted by the earth on ball.