What is the retardation of a car moving with a velocity of 50 km HR is brought to rest in 45 seconds?

Hence, the retardation is 0.308 m/s².

How far did the car travel after it applies its brakes?

9. A train decreases speed from 30 m/s to 20 m/s while traveling a distance of 250 m. What is the acceleration of the train? >

How much time does the car takes to stop?

In an emergency the average driver takes approximately 1.5 seconds to react. A modern vehicle with good brakes and tyres, after braking, is capable of stopping at approximately 7 m/s2. A dry road that is sealed and level enables good friction between the tyres and the road to help stop the vehicle sooner.

What is change of velocity formula?

Multiply the acceleration by time to obtain the velocity change: velocity change = 6.95 * 4 = 27.8 m/s . Since the initial velocity was zero, the final velocity is equal to the change of speed.

What is the deceleration of a car travelling at 30 km/h?

A car travelling with a velocity of 30km/h is brought to rest in 5 seconds by applying brakes. What is its deceleration? – Quora A car travelling with a velocity of 30km/h is brought to rest in 5 seconds by applying brakes.

What is the initial and final velocity of a car?

Initial velocity of a car is 30 km/h. Let it represent as u = 3 0 k m / h = 3 0 × 5 ÷ 1 8 = 2 5 / 3 m / s. Formula:- km/h = 5/18 m/s. Because the car is brought to be rest it means that final velocity would be zero.

What is the final velocity of the truck at 90 km/h?

So, 90 km/h= 90×5/18m/s = 25m/s. This is the initial velocity of the truck and final velocity is zero. Futher on, we can apply third equation of motion here but sign of acceleration will be negative because it is retardation.

What is the retardation of 126 kmph on a straight road?

Originally Answered: A car moving along straight road with a speed of 126 kmph is brought to rest within a distance of 200 m. What is the retardation and time? First convert 126kmph to m/s ie. 35 m/s.