Figure P2.15 shows a graph of v x versus t for the motion of a motorcyclist as h

Question

Figure P2.15 shows a graph ofvxversustfor the motion of a motorcyclist as he starts from rest and moves along the road in a straight line.

(a) Find the average acceleration for the time intervalt= 0 tot=6.0s.

(b) Estimate the time at which the acceleration has its greatest positive value.

What is the value of the acceleration at that instant?

(c) When is the acceleration zero?

(d) Estimate the maximum negative value of the acceleration.

At what time does it occur?

Figure P2.15 shows a graph ofvxversustfor the motion of a motorcyclist as he starts from rest and moves along the road in a straight line. (a) Find the average acceleration for the time intervalt= 0 tot=6.0s. (b) Estimate the time at which the acceleration has its greatest positive value. What is the value of the acceleration at that instant? (c) When is the acceleration zero? (d) Estimate the maximum negative value of the acceleration. At what time does it occur?

Explanation / Answer

a) avg acceleration = 8-0/6 =1.33 m/s2 b) at t = 3s , acceleration is maximum.... acceleration at this pt = 6-2/2= 2 m/s2 c) acceleration is zero at t = 6, and at t > 10s

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