3. A car is travelling with a velocity of 40 m/s and has a mass of 1.120 kg. The car has_______________ energy? Calculate it
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Answer:
896Joule.
Explanation:
Velocity of a car = 40m/s
Mass of a car = 1.120kg.
Kinetic energy = ?
K.E. = ½ mv²
= ½ × 1.120 × (40)²
= ½ × 1.120 × 1600
= ½ × 1792
= 896J.
∴ the car has 896J of energy.
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