A car starts from rest and covers a distance of 40m in 10s. Calculate the...
PHYSICS
WAEC 2014
A car starts from rest and covers a distance of 40m in 10s. Calculate the magnitude of its acceleration
- A. 0.25ms-2
- B. 0.80ms-2
- C. 3.20ms-2
- D. 4.00ms-2
Correct Answer: B. 0.80ms-2
Explanation
S = ut + \(\frac{1}{2} at^2\)
40 = 0 x 10 + \(\frac{1}{2}\) x a x 102
50a = 40
a = \(\frac{40}{50}\)
= 0.8ms-2
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