Question

C

the energy of position or shape
Calculate the Kinetic Energy of a 0.06 kg tennis ball moving at a velocity of 30
m/s *
Kinetic & Potential Energy
KE = { m V? PE = mgh
Quick & Simple!
54
Calculate the memetic energy of a 0.06 kg tennis ball moving at a velocity of 30 m/s

Answer 1

27J

3528J

Step-by-step explanation:

First problem:

Given parameters:

Mass of tennis ball = 0.06kg

Velocity of tennis ball = 30m/s

Unknown:

Kinetic energy = ?

Solution:

Kinetic energy is the energy due to the motion of a body.

It is expressed as:

K.E =
`(1)/(2)` m v²

K.E =
`(1)/(2)` x 0.06 x 30² = 27J

Second problem:

Given parameters:

Mass = 30kg

Height = 12m

Unknown:

Potential energy = ?

Solution:

Potential energy is the energy due to the position of a body.

Mathematically;

Potential energy = mgh

m is the mass

g is the acceleration due to gravity

h is the height

Now;

Potential energy = 30 x 9.8 x 12 = 3528J