Question

A car starts from rest and acquire velocity of 54km h in 2 seconds find if the mass of car is 1000kg what is the force acting on it

Answer 1

to find force the formula is F= ma where m= mass , and a= acceleration
so now as acceleration is not given we have to find acceleration
acceleration= velocity/time= 54/2= 27m/sec
now substitute value of "m" and "a" in formula we get F= ma
F= 1000×27=27000 Newton

Answer 2

u = 0m/s
v = 54km/h =15m/s
time is 2sec
then,
v=u+at
54=0+a*2
2a=54

a=54/2= 27m/s sq.
mass is given 1000kg ,then
force = mass * acceleration
1000*27
27000N ans
hope it help you....
good morning:)