Question

. An object falls from a height of 5.0 m. Air resistance can be ignored. As it hits the ground the object has 750 J of kinetic energy. Calculate its mass?

Answer 1

Answer:

15Kg

Explanation:

Assumption let acceleration due to gravity be 10m/s

height=5.0m

Kinetic energy=750 J

Kinetic energy=potential energy(Law of Conservation of energy)

potential energy=mass*gravity*height

750=m*10*5

∴m=15 Kg