Answers
The car's forward motion is opposed by the friction between the road and the tires and by the resistance of the air.
Answer:
100J
Explanation:
Kinetic energy=1/2mv^2
Kinetic energy=(1/2 x 8)x5^2
Kinetic energy=4x25
Kinetic energy=100
100J
Answer:
C
Explanation:
There is a decrease in temperature and daylight and plants produce less food.
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Ke= 1/2 x m x v^2
Ke= 1/2 x 2.1 x 30^2
Energy = 945 J
