Question

Helllppp mee!

what is the KE of a baseball having a mass of 0.14 kg that is thrown with a velocity of 18 m/s?

Answer 1

KE = 0.5mv²
KE = 0.5 * 0.14kg * 18² m/s
KE = 22.68 J

Answer 2

Given:

m = 0.14 kg

v = 18 m/s

To find:

Kinetic energy= ?

Step-by-step explanation:

Kinetic energy of the object is possessed when the object is in motion. It is define as the work done required to accelerate a body from rest to motion. Unit of energy is Joule and it is same as unit of work done. Energy is nothing but the capacity to do work.

Solution:

Kinetic energy of the ball is given by,

Kinetic energy =
`(1)/(2)m v^(2)`

m = 0.14 kg

v = 18 m/s

Kinetic energy =
`(1)/(2)(0.14) (18)^(2)`

Kinetic energy = 226.8 Joule