A student observes a speed-time graph for a car that moves with constant speed for 10 seconds, then accelerates for 5 seconds. How can the student use the graph to calculate the total distance travelled during these 15 seconds?

Question

A student observes a speed-time graph for a car that moves with constant speed for 10 seconds, then accelerates for 5 seconds. How can the student use the graph to calculate the total distance travelled during these 15 seconds? — Exam MCQ

rrbjepyq.in · Accepted Answer

A. By calculating the area under the speed-time graph for each section and adding them — The correct choice is By calculating the area under the speed-time graph for each section and adding them. It follows from the relevant Newtonian mechanics, motion, work, energy, power or simple-machine relationship.

rrbjepyq.in · Answer

B. By using only the area under the acceleration section

rrbjepyq.in · Answer

C. By reading the final speed at 15 seconds and multiplying by 15

rrbjepyq.in · Answer

D. By multiplying the total time by the average speed shown on the graph

A student observes a speed-time graph for a car that moves with constant speed for 10 seconds, then accelerates for 5 seconds. How can the student use the graph to calculate the total distance travelled during these 15 seconds?

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