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Two points on a velocity time-graph have coordinates (5s, 10ms-1) and (20s, 20ms-1). Calculate the...

Physics
JAMB 1989
Two points on a velocity time-graph have coordinates (5s, 10ms-1) and (20s, 20ms-1). Calculate the mean acceleration between the two points
  • A. 0.67ms-1
  • B. 0.83ms-1
  • C. 1.50ms-1
  • D. 2.00ms-1
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Correct Answer: Option A
Explanation
a = \(\frac{v - u}{\Delta t}\)

a = \(\frac{20 - 10}{20 - 5}\)

a = 0.67ms-1
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