Question

"When you throw a ball upwards, it reaches a certain height and then it starts falling down." What is the reason for this? Explain. Also derive an equation for 'g' and calculate the value of 'g'.

Answer 1

Answer:

The ball starts falling down after reaching a certain height because of gravity, the force that attracts objects to the core of the Earth. In SI units, G has the value 6.67 × 10-11 Newtons kg-2 m2. The acceleration g=F/m1 due to gravity on the Earth can be calculated by substituting the mass and radii of the Earth into the above equation and hence g= 9.81 m s-2.

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