Question

The driver of a car travelling along a straight road with a speed of 90km/hr observes a sign board which gives

the speed limit to be 54km/hr. The signboard is 70m ahead when the driver applies brakes. Calculate the

acceleration of the car which will cause the car to pass the signboard at the stated speed limit​

Answer 1

Answer:

2.85 m/(second)sqr

Explanation:

first we will convert both speeds in m per sec

then we will put the values in third motion equation from there we get the value be approx 2.85 m/(s)sqr