1.A constant force of magnitude 15,000
N is applied by the engine on a car of
mass 3,000 kg. If frictional force is
neglected, then the car accelerates
with a magnitude of
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Answer:
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Step-by-step explanation:
YOU all so write this type
Mass of the car m=1000 kg
Initial velocity of car v
1
=0
Final velocity of car v
2
=100km/h=100×
18
5
m/s=27.78m/s
Average power of car=change in kinetic energy per unit time=
t
2
1
mv
2
2
−
2
1
mv
1
2
,since v
1
=0
So,average power of car=
t
2
1
mv
2
2
=
5
2
1
×1000×27.78
4
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