Question

Which of the following has the most kinetic energy?

a. A car traveling at 20 kilometers per hour
b. A tractor traveling at 20 kilometers per hour
c. A bicycle traveling at 20 kilometers per hour
d. A motorcycle traveling at 20 kilometers per hour

Answer 1

b

Step-by-step explanation:

KE = 1/2mv²

The car, tractor, bicycle and motorcycle all have the same velocity (20 km/hr). Mass (m) is directly proportional to KE, so the object with the greatest mass has the greatest KE. The tractor has the most mass, so it has the most KE.