a )
given
v = 7.4 m/s
t = 1.1 sec
u = 0
a = v - u / t
a = 7.4 / 1.1
a = 6.7272 m/sec2
distance S = u t + 1/2 a t2
S = 0 + 0.5 X 6.7272 X 1.12
S = 4.0699 m
Power P = F .S / t
P = m X a X S / t
P = 56 X 6.7272 X 4.0699 / 1.1
P = 1393.841 W
b )
P = 1393.841 / 746
P = 1.8684 horse power
P = 1.8684 hp
Because it can go from rest to 7.4 m/s (about 17 mi/h) in 1.1 s, one...
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