A pickup truck with mass 2150 kg is traveling with a speed of 26.6 m/s, while...

A pickup truck with mass 2150 kg is traveling with a speed of 26.6 m/s, while a compact car of mass 1121 kg is traveling in the opposite direction with the same speed. The truck and car undergo a head-on collision and thereafter move together as a single body. What is the change in kinetic energy (AK) of the system consisting of both vehicles?
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Solutions

Expert Solution

m1 = mass of truck = 2150 kg

m2 = mass of car = 1121 kg

v1i = initial velocity of truck = 26.6 m/s

The car is moving at the same speed in opposite direction

so, v2i = initial velocity of car = -26.6 m/s

After the collision, both vehicles move together as a single body.

Let final final velocity of both cars be vf

No external force is acting on the system of car and truck in horizontal direction.

So, momentum of system is conserved

Kinetic enery of system reduced by 1,042,691.07 J

genius_generous answered 1 year ago

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