The driver of a car travelling along a straight road with a speed of 72km/hour observe a signboard which give a speed limit to be 54 km/hour. The sign board is 70m ahead when the driver applies the break calculate the acceleration of the car which will cause the car to pass the signboard at the stated speed limit?

asked by Garima

8 years ago

1,038 views

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1 answer

vf^2=vi^2+2ad
change 72km/hr, 54km/hr to m/s
then solve for a (in m/s)

answered by bobpursley

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1

Question

The driver of a car travelling along a straight road with a speed of 72km/hour observe a signboard which give a speed limit to be 54 km/hour. The sign board is 70m ahead when the driver applies the break calculate the acceleration of the car which will cause the car to pass the signboard at the stated speed limit?

1 answer

vf^2=vi^2+2ad
change 72km/hr, 54km/hr to m/s
then solve for a (in m/s)

bobpursley · Answer

vf^2=vi^2+2ad change 72km/hr, 54km/hr to m/s then solve for a (in m/s)