Question

Calculate the force required to impart to a car a velocity of 30m/s in 10 seconds starting from rest. The mass of the car is 1500 kg please give me the solution

Answer 1

When a car starts from the rest, its initial velocity is 0 and here its moving velocity is mentioned to be 30m/s.

So the difference in these two velocities is 30 – 0 = 30 m/s.

Hence, the acceleration of the car is calculated as this difference in velocities / time,

means here it is 30 / 10 = 3. 

The formula for finding the force is acceleration x mass, i.e. 1500 x 3 = 4500 Newton. 

Answer 2

Answer:Mass(m)=1500kg

Time(T)=10 seconds

Final velocity (v)=30m/s

initial velocity (u)=0m/s

By using equation of motion,we have

Acceleration (a)=v-u/t

=30-0/10

=3m/s

Force=ma

=1500*3

=4500N

Hope it helps u