Question

a car accerlerates by 50m/s.it would attain a speed of 100k/h,form rest in

Answer 1

a=50m/s^-2

v=100km/h

=100×5/18 m/s

=250/9m/s

v=u+at

250/9 = 0+ (50)(t)

250/9= 50t

5/9 s = t

Answer 2

Answer:

T = 5/9  sec

Explanation:

a car accelerates by 50m/s².it would attain a speed of 100k/h,form rest in

Final Velocity = 100 km/hr

1km = 1000m

1 hr = 3600 sec

100 km/hr = 100 * 1000 /3600  m/s

= 1000/36 m/s

= 250/9 m/s

a = 50 m/s²

U = 0 m/s  (initial Velocity at Rest)

V  = U + at

250/9 = 0 + 50*T

=> T = 5/9  sec