Question

How much kinetic energy does a 50 kg object have if its moving at a velocity of 2 m/s?

A) 25 joules
B) 50 joules
C) 100 joules
D) 200 joules

Answer 1

C) 100 joules

Step-by-step explanation:

The kinetic energy of an object is given by:

`K=(1)/(2)mv^2`

where m is the mass of the object and v its speed.

In this problem, we have an object of mass m = 50 kg and v = 2 m/s, so by using the formula we can find its kinetic energy:

`K=(1)/(2)(50 kg)(2 m/s)^2=100 J`