A car starts from rest and covers a distance of 40 m in 10 s. Calculated the magnitude of its acceleration

A. 3.20 ms−2
B. 0.25 ms−2
C. 0.80 ms−2
D. 4.00 ms−2

Correct Answer:

Option C = 0.80 ms−2

Explanation

S = ut + ½at²

40 = 0 x 10 + ½a x 10²

50a = 40

a = 40/50

= 0.8m/s²