Answer:
acceleration is the rate of change of velocity.
velocity = displacement ÷ time
v = d ÷ t
v = 100 ÷ 5
v = 20 m/s
take a for acceleration,
a = (v - u) ÷ t
a = ( 20- 0) ÷ 5
a = 20 ÷ 5
a = 4 m/s² (answer)
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