Question

A vehicle having mass equal to 1000 kg is running with a speed of 5m/s. After applying the force of 1000N for 10 second what will be the speed of vehicle?

Answer 1

It's speed will be 10 m/s

Answer 2

F = ma 
1000 = 1000 a 
a = 1 $m/ s^{2}$
u = 5 m/s
t = 10 s 
v = u + at
   = 5 + 10 = 15 m/s