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What is the difference in stopping time between 60mph and 30mph?
Wiki User
∙ 11y ago
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.
Wiki User
∙ 7y ago
Wiki User
∙ 11y agoIf the velocities listed are constant, the acceleration is zero, therefore the net force is zero.
Wiki User
∙ 8y agoIf the speed doubles, the force of impact quadruples.
Wiki User
∙ 8y agoKinetic 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.
Wiki User
∙ 11y agoThat depends on the surface on which you are stopping and its condition.
Wiki User
∙ 7y agoThe 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.
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4 times.
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At 60mph the force of your car impacting a surface is about four times as great as 30mph?
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The overall stopping distance would be around 122m (400ft) This is made up of a thinking distance of 24m (79ft) and an actual stopping distance of 98m (321ft). The thinking distance is around 3m for every 10mph of speed and the overall stopping distance is calculated as follows: 2x20 ft at 20mph 2.5x30 ft at 30mph 3x40 ft at 40mph 3.5x50 ft at 50mph 4x60 ft at 60mph 4.5x70 at 70mph 5x80 at 80mph = 400 ft james s
