39. Sketch the acceleration-versus-time graph from the following velocity-versus-time graph. Velocity vs. Time 10 4 -2 -4 -6 -8- -10 O 10 20 30 40 50 60 70 80 90 100 Time (s) 6, 2. (sju) (1)A

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5. Your motion along the x-axis begins at rest and at x= 0. The motion consists of acceleration at 2.00 m/s2for 10.0 s, a time period of 6.00 seconds with no acceleration, and then deceleration at -1.00 m/s2for 20.0 s resulting in a final speed of zero. The total distance traveled is 420 m. What is the average speed during this motion? Give answer to 3 significant figures. Help solve this problem, thanks!

3) It is a velocity-time graph for an object under constant acceleration. Determine the displacement of the object over the interval 0 s to 3.0 s, 3.0 s to 5.0 s, 5.0 s to 7.0 s. Determine the total displacement. Determine the accelerations of object over the interval 0 s to 3.0 s, 3.0 s to 5.0 s, 5.0 s to 7.0 s. What is the average velocity during the interval 0 s to 4.0 s? Draw the graphs of position-time if its initial position be zero. Draw the graphs of Acceleration-time. v (m/s [E]) 1.2 1.0 0.8 0.6 0.4 0.2 0+ 0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 t(s)

1. The cheetah can reach a top speed of 114 km/h. while chasing its prey in a short sprint, a cheetah starts from rests and runs 45 min in a straight line, reaching a final speed of 72 km/h. a. Determine the cheetah's average acceleration during the short sprint, and b. Find its displacement at t= 3.5 s O 4.4m/s2, 27m O 5.6m/s2, 56m O 1.2m/s2, 15m

2. Can an object with a velocity of zero experience an acceleration that is nonzero? Explain. 3. A ball is held in a person's hand. 53% Prsic 8A 令

7. Is it possible for an object to have zero velocity but still have an acceleration? If so, give an example. If not, explain why not.

of Between what times did the object have a non-zero acceleration? 6 Distance (m) 5 4 0 1 Select one: 2 a. O s to 5 s 3 4 5 Time (s) e. 5 s to 8 s 8 b. the object was not accelerating at any time c. O s only Od. O s to 8 s