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Solve the physics problem step by step
5. See graph. The position graph follows the equation: x-0.2t2 +1.4t+3 Assume SI units. a. What is the average velocity between 0 and 7 seconds? b. What is the instantaneous velocity at 2 seconds? c. At what time(s) does the velocity of the object equal zero? d. Sketch the velocity graph. x (m) 10 Question 5 6. The position of an object is given by: t2+7t +55 4 +3 12 2 Assume SI units. Sketch all three (1) position, (2) velocity, and (3) acceleration with respect to time. Your sketches should include labeled axes and the time frame from 0s <t<7s. At what time(s) does the acceleration of the object equal zero? a. b.
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Answer #1

Velocity = dx/dt

(s)a Vas 2. (b41.4 dt at t. 2 v 0.4(2) +4 er/4 1-4 飞(4)

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