an object starts from rest with a constant acceleration of 8.0m/s^2 along a straight line.find (a)the speed at the end of 5.0s (b)the average speed for 5s interval and (c)the distance travelled in the 5.0s
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u = 0
a = 8 m/s²
(a) v = u + at
8*5 = 40 m/s
(c) s = ut + 1/2 a t²
1/2 * 8 * 5 * 5 = 100 m
(b) Average speed = distance / time
100 / 5 = 20 m/s
a = 8 m/s²
(a) v = u + at
8*5 = 40 m/s
(c) s = ut + 1/2 a t²
1/2 * 8 * 5 * 5 = 100 m
(b) Average speed = distance / time
100 / 5 = 20 m/s
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