Question

A car slows down from 50m/s to 20m/s in 60sec what is the acceleration​

Answer 1

Answer:

Acceleration = Change in velocity ÷ Time

v final velocity = 20m/s

u initial velocity = 50m/s

= (v - u)/t

= (20m/s - 50m/s)/60s

= (-30m/s)/60s

Acceleration = -0.5m/s²

Or

Retardation = 0.5m/s²

Hope it helps!!

Answer 2

Answer:

u = 50 m/s, v = 20 m/s, t = 60 s

a = (v - u)/t

  = (20 - 50)/60

  = (- 30)/60

  = - 1/2 m/s²     (retardation)

Hope this helps you.

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