Question

calculate the force required to impart a car with a velocity of 30 m, second starting from rest the mass of the car is 1500 kg ​

Answer 1

Explanation:

When a car starts from the rest, its initial velocity is O 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.

$\huge{ son \: prodigal}$

Answer 2

Correct Question

Calculate the force required to impart to a car, a velocity of 30m/s in 10 seconds. The mass of the car is 1500 kg.

Solution

Given-

initial velocity of car(u)=0 m/s

final velocity of car (v)=30 m/s

time(t)=10s

Now,

v=u+at

30=0+a×(10)

a=3m/s ^2

we know,

F=ma =1500×3

F=4500N