Question

A bowling ball weighing 10.0 N is dropped off the top of a 5.00 m tall building. After falling 1.00 m, the book’s kinetic energy is?

a. 10.0 J b. 5.00 J c. 40.0 J d. 50.0 J

Answer 1

a. 10.0 J

Step-by-step explanation:

Given parameters:

Weight of bowling ball = 10N

Height of building = 5m

Distance of fall = 1m

Unknown:

Kinetic energy of the ball = ?

Solution:

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

Mathematically;

K.E =
`(1)/(2)` mv²

Since this body is falling under gravity;

K.E = mgh

mg = weight of the ball

h is the height

Insert the parameters and solve;

K.E = 10 x 1

K.E = 10J