A car has a mass of 8000kg and a kinetic energy of 24,000j. What is the speed?

2.5m/s

Explanation:

Kinetic energy = 1/2 mv²

Mass = m= 8000kg

Velocity(speed) = v =

K. E = 24000J

K. E = 1/2 x 8000 x v²

24000 = 4000 x v²

Divide both sides by 4000

V²= 24000/4000

V² = 6

Find square root of both sides

V = √6

V = 2.5 m/s

The S. I unit of energy is joules with symbol J

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we're given that v₀ = 0 and a = 5.4 m/s². therefore, since v = at + v₀ for constant acceleration the equation for velocity is

after 28s,

m/s

which i would round to 150 m/s as my final answer

the rearrangement of particles in a physical change. hope this