calculate the force required to impart to a car of 60m/s is 20sec. starting from rest the mass of the car is 3000 kg???
Answers
Answered by
0
Answer:
Force imparted = lost momentum / time taken
Lost momentum = 3000x60
= 180000kg-m/s
Time taken = 20s
F = 180000/20 = 9000N
Answered by
0
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. 3000 x 3 = 9000 Newton.
Similar questions