A boy drops a stone from a cliff, which reaches the ground in . Calculate the final velocity of the stone. [Take ]
Step 1: Given data
The initial velocity of stone,
Time taken,
Acceleration due to gravity,
The final velocity of the stone, (To be calculated)
Step 2: Calculating the final velocity of the stone
Applying the equation of motion for the freely falling object,
[ '' is positive when a body falls downwards]
Hence, the final velocity of the stone is .