2. A 70-kg man is walking at a speed of 2.0 m/s. What is his kinetic energy (energy is measured in Joules
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Explanation:
Kinetic energy= 1/2 × m ×v²
= 1/2 × 70 × 2²
=140 joules
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Given : A 70-kg man is walking at a speed of 2.0 m/s.
To Find : kinetic energy
Solution:
kinetic energy = (1/2)mv²
m = mass = 70 kg
v = velocity = 2 m/s
kinetic energy = (1/2) * 70 (2)²
= 70 * 2
= 140 Joules
Kinetic energy is 140 Joules
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