18. [lpt] For each of the four statements, select the matching graph. E.g., if g

Question

18. [lpt] For each of the four statements, select the matching graph. E.g., if graph A corresponds to the first statement, graph C to the second, and none of the graphs to statements 3 and 4, enter ACNN (i) Find the x-t graph that corresponds to this graph: (ii) A car starts from rest, steadily speeds up to a final speed in 15 seconds, stays at that speed for 10 seconds and decelerates to a stop in 5 seconds (iii) A rock is dropped from a tower and hits the ground (iv) A student walks slowly to the bus stop, realizes she forgot her homework and quickly walks back home to get it. A)

Explanation / Answer

The matching pairs are determined on the basi of following facts : slope of position vs time graph gives velocity vs time graph and slope of velocity vs time grapgh gives acceleration vs time graph

i) - A

ii) - B

iii) - C

iv) - D

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