JEE Main Physics question
At the instant a motorbike starts from rest in a given direction, a car overtakes the motorbike, both moving in the same direction. The speed–time graphs for the motorbike and the car are represented by and respectively (motorbike accelerating from rest up to a plateau at 60 ms; car moving at a constant 40 ms throughout). Then
Answer: (C)
Solution
The motorbike and car are together at (the instant of overtaking). The car's position is . From the figure, the motorbike accelerates uniformly from rest, reaching its plateau speed of 60 ms at s (giving m there, versus m — a gap of
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