Question

What is the mass of an object that has 100 J of KE when moving at 5 m/s?

Answer 1

KE = 1/2mv²

solve for m , plug in V = 5 m/s and KE = 100 J. The answer is m = 8 mg.

Answer 2

Given :

➝K.E = 100 J

➝Moving at 5 m/s

To Find :

➝ Mass of an object = ?!

Solution :

Let's solve this !

➝K.E = 1/2 mv^2

➝ 100 = 1/2 m (5)^2

➝ 100 = 1/2 m× 25

➝ 100 = 25/2 × m

➝ 100 × 2 / 25 = m

➝ 200/25 = m

➝ 8 = m

So, the mass of an object is 8 mg.