Figure 9.27
1 answer:
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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 = mv²
So;
m is the mass
v is the speed
2 KE = mv²
2 x 18000 = 9000 x v²
v² = 4
v = 2m/s