Question

A car moving with a velocity of 10 m/s can be stopped by the application of a constant force F in a distance of 20 m .if the velocity of the car is 30 m/s .it can be stopped by this force in

Answer 1

Answer:

constant force mean constant acceleration

${v}^{2} - {u}^{2} = 2as$

$0 - {10 }^{2} = - 2a20 \\ \\ a = 2.5$

$0 - {30}^{2} = 2 \times 2.5s \\ \\ s = 180$