Respuesta :

dekowmohamed

acceleration = change in velocity /change in time

convert 40km to meter then divide it with 5

Acceleration in m/s² is 2.2 m/s²

Given that;

Initial velocity of car = 40 km/h

Time taken to stop = 5 s

Find:

Acceleration in m/s²

Computation:

Initial velocity of car = 40(1000) / [(60)(60)]

Initial velocity of car = 40,000 / 3600

Initial velocity of car = 11.11 m/s

v = u + at

0 = 11.11 + (a)(5)

5a = -11.11

a = 2.2 m/s²

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