6.

c) Graphs:

7.

d) In the following graph,

the average velocity is given by using the end points of the line.

S 92.

a)

	Velocity	Acceleration
A - B	Positive	0
B - C	Positive	Negative (Decelerating)
C - D	0	0
D - E	Negative	Positive (Accelerating)

b) Acceleration is not constant for A-B, C-D.

c)

	Velocity	Acceleration
A - B	Negative	0
B - C	Positive	Negative (Decelerating)
C - D	0	0
D - E	Positive	Positive (Accelerating)

S 93.

	Velocity	Acceleration
A - B	Positive	Negative (Decelerating)
B - C	0	0
C - D	Positive	Positive (Accelerating)
D - E	Positive	0

	Velocity	Acceleration
A - B	Negative	Negative (Decelerating)
B - C	0	0
C - D	Positive	Positive (Accelerating)
D - E	Positive	0

b) No.

19.

25.

28. Starts from rest, therefore initial velocity = 0.

S 95. The velocity is forward, acceleration opposes thus its negative.

c)

S 96.

S 82.

33.

36. Note that x(for car) = x(for truck) when the car overtakes the truck.

43. v = 0 @ top (50 meters high).

c)

47. Important; .544 meters is not the final height!

59. How long will it take to reach the top?

S103. How fast is the ball going at the top of the window? Let the initial velocity be the speed at the top of the window.