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20. Three cars, car X, car Y, and car e cars, car X, car Y, and car Z, begin accelerating from rest at the same time. Car 15
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Answer #1

Solution) Mx > My > Mz

Fx = Fy = Fz = F

KE = (P^2)/(2M)

P is momentum

P = MV

F = Ma = M(V/t)

Ft = MV

Ft = P

Since force and time is same so momentum is same .

So KE = (P^2)/(2M)

KE is inversely proportional to mass

AS mass increases KE decreases

Since car X has greatest mass it has least kinetic energy

Car Z has least mass so it has greatest kinetic energy.

There car Z has most amount of kinetic energy.

Option(d)

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