5) The motions of a car and a truck along a straight road are represented by the

Question

5) The motions of a car and a truck along a straight road are represented by the velocity-time graphs gure. The two vehicles are initially alongside each other at time t-0. At time T, what is true about these two vehicles since timet-0? Truck Car A) The car will have traveled further than the truck. B) The car will be traveling faster than the truck. C) The truck will have traveled further than the car. D) The truck and the car will have traveled the same distance. , the driver6) 6) A car is 200 m from a stop sign and traveling toward the sign at 40.0 m/s. At this time for the driver to apply the brakes, suddenly realizes that she must stop the car. If it takes 0.200 s what must be the magnitude of the constant acceleration of the car after the brakes that the car will come to rest at the stop sign? are applied so B) 2.89 m/s2 3.89 m/s2 D)3.42 m/s2 E) 2.08 m/s2 A) 4.17 m/s2

Explanation / Answer

As shown in the graph, at time t=0, both car and truck are alongside.

(5)

It is also clear from the graph that the car started journey with zero velocity (or from rest) abd truck as started with a constant velocity (v).

By that time the car reaches speed equal to the speed of truck (v) at t=T, truck would cover more distance than the car.

So, the answer is ...... Option (C) the truck will have travelled further than car

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