The figure shows. a graph of the position x of two cars, C and, as a function of

Question

The figure shows. a graph of the position x of two cars, C and, as a function of time t. According to this graph, which statements about these cars must be true? (There could be more than one correct choice.) The cars meet at time t = 10 s. The magnitude of the acceleration of car C is greater than the magnitude of the acceleration of car D. The magnitude of the acceleration of car C is less than the magnitude of the acceleration of car D. Both cars have the same acceleration. At time t = 10s, both cars have the same velocity. Which of the following graphs represent an object at rest? (There could be more than one correct choice.)

Explanation / Answer

12)

since the x-t curve intersect at t= 10 s this means the position of the cars at t= 10 s is the same

so option A is correct

again the the slope of the curves give velocity]

since slope of C is more than slope of D so velocity of C is more than velocity of D

but what we can see is that slope remains constant for both C and D with respect to time.

That means acceleration of both C and D is 0

so option D is correct

ans - A,D

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