Question

A car strat from rest and retain the acceleration of 40 m/s in 20 seconds calculate its final velocity .​

Answer 1

Here, u = 0m/s

a = 40/20m/s² = 2m/s²

t = 20 s

v = u + at

v = 2 × 20m/s = 40m/s

Explanation:

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Answer 2

800m/S2

Explanation:

v = u + at.

v = 0 + 40× 20.

v = 800m /S2.