1 m/s =2.23694 mi/h
a)
Vtop=28.8*2.23694=64.424 mi/h
b)
From
V=Vo+at
since it starts from rest Vo=0
=>19.8=0+a(2.65)
a=7.4717 m/s2
From
=>28.8 = 0+(7.4717)taccel
taccel=3.8545 s
From
d=Vot+(1/2)at2
d=0+(1/2)*7.4717*3.85452
d=55.5 m
c)
Distance traveled after reaching constant speed
D=128-55.5 =72.5 m
time taken to travel 72.5 m
tcons = D/V =72.5/28.8=2.517 s
Total time taken to travel 128 m is
ttotal=3.8545+2.517
ttotal=6.372 s
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