The Function S = F(t) Gives the Position of a Body

question 142

Multiple Choice

The function s = f(t) gives the position of a body moving on a coordinate line, with s in meters and t in seconds.
- $$s = 8 t ^ { 2 } + 4 t + 7,0 \leq t \leq 2$$
Find the body's displacement and average velocity for the given time interval.

• A) \(40 \mathrm {~m} , 40 \mathrm {~m} / \mathrm { sec }\)
• B) \(40 \mathrm {~m} , 20 \mathrm {~m} / \mathrm { sec }\)
• C) \(54 \mathrm {~m} , 27 \mathrm {~m} / \mathrm { sec }\)
• D) \(24 \mathrm {~m} , 36 \mathrm {~m} / \mathrm { sec }\)

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