Question

a car de-accelarates from 100m/s to 60m/s in time 20s. find the acceleration
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Answer 1

Answer:

in this case

u=100m/s

v=60m/s

t=20

acceleration=(v-u) /t

acceleration=-40/20

acceleration=-2m/s

Answer 2

Answer:

Acceleration = 2m/sec²

Explanation:

1. Final velocity = 100m/s
2. Intial velovity = 60m/s
3. And Time = 20sec

Acceleration =Final velocity - intial velocity÷ time