Question

Calculate the kinetic energy of a 45 g golf ball traveling at 60m/s

Answer 1

KE = 0.5 * mass * velocity^2
KE = 0.5 * 0.045 * 60^2
KE = 81

Answer 2

Answer: The kinetic energy of the golf ball is 81 J

Step-by-step explanation:

Kinetic energy is defined as the energy which is possessed due to its motion.

It is also defined as the half of the product of mass of the object and square of the velocity of the object.

Mathematically,

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

where,

`E_K` = kinetic energy of golf ball

m = mass of the golf ball = 45 g = 0.045 kg (Conversion factor: 1 kg = 1000 g)

v = velocity of golf ball = 60 m/s

Putting values in above equation, we get:

`E_K=(1)/(2)* 0.045* (60)^2\\\\E_K=81J`

Hence, the kinetic energy of the golf ball is 81 J