Question

A car accelerates uniformly from 36km/h to 72km/h in10s.Calculate the
distance covered by the car

Answer 1

Answer:

s= 150 meter

Explanation:

given

u= 36km/h = 36×5/18= 10m/s

v= 72km/h= 72×5/18= 20m/s

t= 10 sec

since v= u +at

20= 10+a×10

10a= 10

a= 1 m/sec²

since

v²= u²+2as

20² = 10²+2×1×s

2s= 400-100= 300

s= 300/2

s= 150 meter