A powerful motorcycle can accelerates from rest to 28m/s in only 4s. What is the average acceleration and how far does it travel in that time?
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given,
u= 0m/s
v=28m/s
t=4s
a=?????????s=????????
v=u +at
28= 0 + 4a
4a=28 { we can write a=7m/s² }
∴ we can write the average acceleration = 7m/s2
displacement (s) v²=u²+2as
28²= 0²+(2x7s)
784= 14s
s= 784/14
s= 56
∴the distance travelled = 56 meters
u= 0m/s
v=28m/s
t=4s
a=?????????s=????????
v=u +at
28= 0 + 4a
4a=28 { we can write a=7m/s² }
∴ we can write the average acceleration = 7m/s2
displacement (s) v²=u²+2as
28²= 0²+(2x7s)
784= 14s
s= 784/14
s= 56
∴the distance travelled = 56 meters
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