Question

What is velocity acquired by a mass dropped from a height of 100m. (ms2)

Answer 1

Use conservation of energy

Potential energy at height 100 m = Kinetic energy at ground

mgh = 0.5mv²

Rearrange the above equation
v = √(2gH)
= √(2 × 10 m/s² × 100 m)
= 20√5 m/s