a bus starting from rest moves with a uniform acceleration of 0.4m/s for 4 minutes . find a.speed acquired b. distance travelled.
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initial speed = u = 0m/s
final speed = v = ?
acceleration = a = 0.4m/s²
Time = t = 4 min = 4×60 = 240s
distance = s = ?
1)
a = (v-u)/t
at+u = v
(0.4×240)+0 = v
96m/s = v
2)
v²-u² = 2as
(96)²-(0)² = 2(0.4)(s)
9216 = 0.8 × s
9216/0.8 = s
11520 m = s
final speed = v = ?
acceleration = a = 0.4m/s²
Time = t = 4 min = 4×60 = 240s
distance = s = ?
1)
a = (v-u)/t
at+u = v
(0.4×240)+0 = v
96m/s = v
2)
v²-u² = 2as
(96)²-(0)² = 2(0.4)(s)
9216 = 0.8 × s
9216/0.8 = s
11520 m = s
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