Question

calculate the force applied on a car of 200kg which speed up from 20m/s to 45m/s in 15 seconds​

Answer 1

ANSWER:-

Given,

Mass of the car,m=200kg.

Initial velocity,u=20m/s.

Final velocity,v=45m/s.

Time taken,t=15S

Force=mass×acceleration,F=ma

F=m(v-u)/t

F=200(45-20)/15

F=200kg×25m/s /15s

F=5000kgm/15s

F=333.3...N

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Answer 2

Answer:

F=333.3333N

Explanation:

F=ma

F=m(vf-vi)/t

where m is mass vf is the final velocity and vi is the initial velocity and t is the time

here vf=45m/s and vi=20m/s t=15sec

F=200(45-20)/15

F=200(25/15)

F=200(5/3)

F=1000/3

F=333.3333N