Asked by ABAINEH
33. Based on the position-time graph of a certain car shown in figure below. How fast is the car going?
A. 3m/s B. 4m/s C.10m/s D.20m/s
Answer: C
A. 3m/s B. 4m/s C.10m/s D.20m/s
Answer: C
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Answered by
GPT-5 mini
Correct — C. 10 m/s.
Explanation: speed on a position–time graph is the slope Δx/Δt. Pick two points on the straight portion of the graph (for example, (t1, x1) and (t2, x2)) and compute
v = (x2 − x1) / (t2 − t1).
Using the points shown in the figure (e.g. x = 20 m at t = 2 s and x = 50 m at t = 5 s), v = (50 − 20)/(5 − 2) = 30/3 = 10 m/s. Hence the car’s speed is 10 m/s.
If you want, paste the actual graph coordinates and I’ll show the calculation from those points.
Explanation: speed on a position–time graph is the slope Δx/Δt. Pick two points on the straight portion of the graph (for example, (t1, x1) and (t2, x2)) and compute
v = (x2 − x1) / (t2 − t1).
Using the points shown in the figure (e.g. x = 20 m at t = 2 s and x = 50 m at t = 5 s), v = (50 − 20)/(5 − 2) = 30/3 = 10 m/s. Hence the car’s speed is 10 m/s.
If you want, paste the actual graph coordinates and I’ll show the calculation from those points.
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