Q1 (10 points) Is it possible that the total distance traveled equals the magnitude of the displacement? Explain. Q2 (10 points) Explain the difference between the instantaneous speed and the instantaneous velocity. 28. A cyclist rides 8.0 km east for 2.0 minutes. then he turns and heads west for 8 minutes and 3.2 km. Finally, he rides east for 16 km, which takes 40 minutes. (a) What is the nal displacement of the cyclist? (b) What is his average velocity? 30. A woodchuck runs 20 m to the right in 5 s, then turns and runs 10 m to the left in 3 s. (a) What is the average velocity of the woodchuck? (b) What is its average speed?35. A particle moves along the x-axis according to x(1) = 10/ - 2/- m. (a) What is the instantaneous velocity at t = 2 s and t = 3 s? (b) What is the instantaneous speed at these times?(c) What is the average velocity between t = 2 s and t = 3 s?36. Unreasonable results. A particle moves along the x-axis according to x(/) = 3/ + 5/ . At what time is the velocity of the particle equal to zero? Is this reasonable?49. At t= 10 s, a particle is moving from left to right with a speed of 5.0 m/s. At t = 20 s, the particle is moving right to left with a speed of 8.0 m/s. Assuming the particle's acceleration is constant, determine (a) its acceleration, (b) its initial velocity, and (c) the instant when its velocity is zero