Answer:
The work done is, E = 20,000 J
Step-by-step explanation:
Given that,
The mass of the truck, m = 2000 Kg
The velocity of the truck, v = 20 m/s
The work done by the truck on colliding with the concrete wall is, W = ?
A body moving with a particular velocity has kinetic energy associated with it. The work done by the body to completely stop the moving body is equal to the kinetic energy.
Therefore,
K.E = E = 1/2 mv²
Substituting the given values in the above equation,
E = 0.5 x 2000 Kg x 20 m/s
= 20,000 J
Hence, the work done on the truck is, E = 20,000 J