Question

A car accelerate uniformly from 18km/h to 36km/h in 5 seconds. Calculate it's acceleration

Answer 1

Answer:

5 m/s²

Explanation:

v = 36 km /h = 36 × 5/18 = 10 m/s

u = 18  km/h = 18 × 5/18 = 5 m/s

t = 5s

a = v - u /t

  = 10 m/s - 5m/s / 5s

  = 5m/s / 5s

  = 5 m/s²

∴ Acceleration = 5 m/s²

Answer 2

Answer:

Initial speed = u = 18 km/hr = 5 m/s.

Final sped = v = 36 km/hr = 10 m/s.

acceleration a = (v-u)/t = (10-5)/5 = 1 m/s2

Distance travelled S = u t + (1/2) a t2 = 5×5 + (1/2)×1×52 = 37.5 m.

Explanation:

Please mark me as brainlist