Question

a truck is running in a velocity of 90 km/hr. If he takes 5 secs to stop, calculate the redardation of car.​

Answer 1

Answer:

90km/hr

=90km/hr*5/18

=25m/s

retardation=v-u/t

=25-0/5                                   (since truck is coming to rest)

=25/5

5m/s^2

Answer 2

Answer:

Hello mate

Explanation:

Calculating acceleration involves dividing velocity by time — or in terms of SI units, dividing the meter per second [m/s] by the second [s]. Dividing distance by time twice is the same as dividing distance by the square of time. Thus the SI unit of acceleration is the meter per second squared

Example: velocity = 50 MPH. stopping distance = 5 squared = 25, add a zero = 250, divide by 2 = 125, sum 2*50 = 225 feet (the exact value can be calculated using the formula given below the diagram on the right).

Mate I'm have given u the hint. Now u try.