Question

Question 23 of 32

A truck has a mass of 9000 kg and a kinetic energy of 18,000 J. What is its
speed?
A. 4 m/s
B. 8 m/s
C. 2 m/s
D. 1.4 m/s
UBMIT

Answer 1

2m/s

Step-by-step explanation:

Given parameters:

Mass of truck = 9000kg

Kinetic energy = 18000J

Unknown:

Speed = ?

Solution:

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

K.E =
`(1)/(2)` mv²

So;

m is the mass

v is the speed

2 KE = mv²

2 x 18000 = 9000 x v²

v² = 4

v = 2m/s