Respuesta :

DumdumNerd

Answer:

Acceleration=a= unknown, since we are to find the velocity.

Final velocity=100m/s=v

Initial velocity=20m/s= u

Time=40seconds.

Mathematically:

a=v-u/t

substituting the givens into the equation.

a= 100-20/40

a=80/40

a=2m/s²

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