The kinetic energy of an 1800-kg truck is 7.2 × 10⁵ J. What is the speed of the truck?

Name: The kinetic energy of an 1800-kg truck is 7.2 × 10 5 J. What is the speed of the truck?
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Question

Quizplus · Accepted Answer

The formula for kinetic energy is: 
KE = 1/2mv^2 
where KE is kinetic energy, m is mass, and v is velocity.

Rearranging this formula, we get: 
v = √(2KE/m)

Plugging in the values, we get: 
v = √(2(7.2 × 10^15 J)/(1800 kg)) ≈ 28 m/s

Therefore, the correct answer is option C: 28 m/s.

The Kinetic Energy of an 1800-Kg Truck Is 7