A velocity-time graph shows a body accelerating from rest to m/s in s, moving at m/s for s, then slowing to rest in s. What total distance does it travel?
Answer and explanation
Correct answer: B. 108 m
- Step 1: Area of the first triangle: . Step 2. Area of the rectangle: . Step 3. Area of the last triangle: . Total . Answer: 108 m. Why not the others: 96 m leaves out the final slowing stage; 84 m leaves out the first stage; 144 m multiplies 12 m/s by the whole 12 s as if it never accelerated or slowed.
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