Question

A book with a mass of 1 kg is dropped from a height of 3 m. what is the potential energy of the book when it reaches the floor

Answer 1

So the mass is 1 and gravity is 9.8 we will round it up to 10 and so 1 times 10 is 10 multiplied by 3 it’s 30 joules

Answer 2

PE=mgh

Where; m is the mass

g is the gravitational force.

h is the height.

the mass is 1kg, the acceleration due to gravity has a constant value of 10ms² . And the height is 3m.

mgh= 1 x 10 x 3 = 30Joules