(Numerical problems) A car is running with the velocity of 72km/h. What will be it's velocity after 5s if it's acceleration is -2m/s square

The car's velocity after 5s : 10 m/s

Given

velocity=v=72 km/h=20 m/s

time=t = 5 s

acceleration=a = -2 m/s²

Required

velocity after 5s

Solution

Straight motion changes with constant acceleration

vf=final velocity

vi = initial velocity

Input the value :

The car is decelerating (acceleration is negative) so that its speed decreases

2b2t

explanation:

2b2t

confused

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