Asked by Muuka
a bus starts from rest and in 30s it reaches speed of 20m/s.then the speed remains steady for 15s and decreases steadily until it stops 5s later.what the distance covered from strat to finish.
Answers
Answered by
Scott
acceleration
... d = 30 s * [(20 m/s + 0 m/s) / 2]
cruise
... d = 15 s * 20 m/s
deceleration
... d = 5 s * [(20 m/s + 0 m/s) / 2]
add the three distances
... d = 30 s * [(20 m/s + 0 m/s) / 2]
cruise
... d = 15 s * 20 m/s
deceleration
... d = 5 s * [(20 m/s + 0 m/s) / 2]
add the three distances
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