Question

How much kinetic energy does a 4.50kg block with a speed of 5.00m/s have?

O
11.23
28.13
5.62)
56.23

Answer 1

56.25J

Step-by-step explanation:

Kinetic energy = 1/2 mv^2

Where m = mass

v = velocity

Given m = 4.50kg

v = 5.00m/s

Kinetic energy = 1/2 x 4.50 x (5.00)^2

= 1/2 x 4.50 x (5.00 x 5.00)

= 1/2 x 4.50 x 25

Multiply through

= 112.5/2

= 56.25J