Question

Do all of them

3. A car starts froms rest and accelerates at a constant 4 m's' rate along a straight path. G) Calculate the car speed a 1 s () Calculate the distance traveled by the car from 0sto 1s )Calculate the distance travelled by the car from 1 s to 2 s

Answer 1

u = 0 a = 4 m/s^2 (constant) (i) v = u + at v = 0 + 4 times 1 = 4 m/s (ii) S = ut + 1/2 at^2 = 0 + 1/2 times 4 times 1 = 2m As car is moving along straight line path the distance covered is equals to displacement So distance covered = 2m (iii) Displacement in 2 sec S^' = ut^' + 1/2 at^'^2 = 0 + 1/2 times 4 times 4 = 8m Distance covered by the car from 15 to 2s is = S^' - S = 8m - 2m = 6m