Question 4:
i. A
car in
initially at rest, picks up a velocity of 72 kmhr-1, over a distance of 25 m.
Calculate the acceleration of the car.
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1
Answer:
Acceleration = v² - u² = 2as
= v = 72km/h = 4m/s
= u = 0m/s
= s = 25m.
= 4² - 0² = 2 × a × 25
= 16 = 50a
= a = 16/50
= a = 0.32m/s².
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