An orange of mass 3kg falls from a height 50m. When its height is H, its speed is

4m/s?

Write an expression that describes the conservation of energy with the given

numbers and H. You don't have to solve for H.

Question

Bradley Sawyer

Physics

17 April, 00:23

An orange of mass 3kg falls from a height 50m. When its height is H, its speed is

4m/s?

Write an expression that describes the conservation of energy with the given

numbers and H. You don't have to solve for H.

+3

Answers (1)

Know the Answer?

Edwin Tyler · Answer 1

(10 m/s²) (50 m) = (10 m/s²) H + ½ (4 m/s) ²

Explanation:

Initially, the orange has only gravitational potential energy.

As the orange falls, it has a combination of potential energy and kinetic energy.

Energy is conserved, so initial energy = final energy:

PE₀ = PE + KE

mgH₀ = mgH + ½ mv²

gH₀ = gH + ½ v²

Plugging in values:

(10 m/s²) (50 m) = (10 m/s²) H + ½ (4 m/s) ²

An orange of mass 3kg falls from a height 50m. When its height is H, its speed is4m/s?Write an expression that describes the conservation of energy with the givennumbers and H. You don't have to solve for H.

An orange of mass 3kg falls from a height 50m. When its height is H, its speed is

4m/s?

Write an expression that describes the conservation of energy with the given

numbers and H. You don't have to solve for H.