Question

calculate the force required to impart to a car a velocity of 30 metre/second in 10 seconds starting from rest .The mass of the car is 1500 kg?​

Answer 1

Answer: 4500 N

Explanation:

m=1500 kg

u=o

v=30 m/s

t=10 sec

a=(v-u)/t

a=(30)/10

a=3 m/(s^2)

Now,

Force=Mass*Acceleration

F=1500*3

F=4500 N

Answer 2

Explanation:

Initial velocity,u=0

Final velocity,v=30m/s

Time Taken,t=10s

v=u+at

30=0+ax10

30=10a

a=30/10

a=3ms^-2

Now,

F=m x a

F=1500 x 3

F=4500N

Thus, the force required in this case is of 4500 newtons.

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