How long does it take before the car is brought to stop?

Since there is a 1 second delay (driver reaction time) in hitting your brakes (both recognition and reaction time is often 2 seconds), the total time to stop is 5.4 seconds to 6.4 seconds.

What will be the stopping distance if the velocity of a vehicle be doubled for the same retardation?

Doubling the initial velocity increases the stopping distance by a factor of 4 for the same deceleration. The stopping distance depends on the vehicle’s speed and weight, in addition to the factors of energy, heat and friction.

What is the retardation of the car assumed uniform?

Negative sign shows that acceleration in negative which is called retardation, i.e., car is uniformly retarded at -a=3.06ms-2.

Are car moving along a straight highway with speed of 126 km per hour?

A car moving along a straight highway with speed of 126 km/hr is brought to a stop within a distance of 200 m . What is the retardation of the car (assumed uniform) and how long does it take for the car to stop? Hence, the car will take 11.43 seconds for it to stop.

What is the formula of retardation?

a = Change in velocity/Time taken So, you can get a negative acceleration value in the case of v

What do you mean by retardation?

Retardation is the act or result of delaying; the extent to which anything is retarded or delayed; that which retards or delays.

What happens to the stopping distance if velocity of a car is double?

The braking distance increases four times each time the starting speed doubles. This is because the work done in bringing a car to rest means removing all of its kinetic energy. So for a fixed maximum braking force, the braking distance is proportional to the square of the velocity.

What happens to distance when you double velocity?

If the velocity of an object is doubled then for a particular period of time, the distance will also gets doubled.

When a car moves on a road with uniform speed of 75 km/h on a straight road then the resultant force on the car is?

Acceleration is zero. Therefore resultant force is zero. Answer: Zero, since uniform velocity means no acceleration.

How do you calculate stopping distance and speed?

Stopping distance = thinking distance + braking distance Thinking distance is approximately 1 foot for every mph you travel at, for example, a car travelling at 30mph will travel 30 feet before the brakes are applied.