Question 23 of 32

Physics

1 answer:

-BARSIC- [3]3 years ago

4 0

Answer:

2m/s

Explanation:

Given parameters:

Mass of truck = 9000kg

Kinetic energy = 18000J

Unknown:

Speed = ?

Solution:

Kinetic energy is the energy due to the motion of a body;

K.E = $\frac{1}{2}$ mv²

So;

m is the mass

v is the speed

2 KE = mv²

2 x 18000 = 9000 x v²

v² = 4

v = 2m/s

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