A car accelerates uniformly from 18 km/hr to 32 km/hr in 5 seconds .Calculate the acceleration and distance travelled by car.
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initial velocity (u) = 18 km/h
= 18 * 5/18
= 5 m/s
final velocity (v) = 32 km/h
= 32 * 5/18
= 8.88 m/s
time taken (t) = 5 s
acceleration (a) = v-u/t
= 8.88 - 5/ 5
= 0.776 m/s^2.
distance travelled (s);
2 a s = v^2 - u^2
2 * 0.776 * s = 8.88^2 - 5^2
1.55 s = 78.55 - 25
s = 53.55 / 1.55
s = 34.54
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