What is the difference in stopping time between 60mph and 30mph?

Answer 1

The kinetic energy of the vehicle when it is travelling faster is four times as great. It the brakes apply the same retardation and the friction from the tires on the road surface is unchanged then the stopping time will be four times as long.

Answer 2

At 60mph, it generally takes longer to stop compared to 30mph due to the higher speed and momentum. Factors such as reaction time, braking distance, and road conditions also affect stopping time. In general, stopping at 60mph will take more than twice the distance compared to stopping at 30mph.

Answer 3

If the velocities listed are constant, the acceleration is zero, therefore the net force is zero.

Answer 4

If the speed doubles, the force of impact quadruples.

Answer 5

Kinetic energy equals one half times mass times velocity squared. If the velocity is doubled, from 30MPH to 60 MPH, the kinetic energy for the same mass would be four times greater.

Answer 6

That depends on the surface on which you are stopping and its condition.

Answer 7

The kinetic energy somehow has to be neutralized - converted into other energy forms. Usually heat energy. The more kinetic energy you have, the more of such energy has to be neutralized.