This exam consists of 25 questions; true-false questions are worth 2 points each, three-choice multiple choice questions are worth 3 points each, five-choice multiple choice questions are worth 6 points each. The maximum possible score is 105. When the exam was given, the minimum "A" score was 93; the minimum "B" was 81; the minimum "C" was 68; the minimum "D" was 52. The mean was 87.0; the median was 91. Click here to see the formula sheet that came with the exam.

A bus makes a trip according to the position versus time graph shown to the right. The trip is composed of three separate segments, labeled A, B, and C.

In which of the segments is the speed of the bus the largest?

(a) A (b) B (c) C

(T) True (F) False

(a) (b) (c)

At t = 0 a ball is thrown straight upward from the edge of a cliff with initial velocity 25 m/s. It lands on the ground at the base of the cliff 7 seconds later.

At what time is the ball at its maximum height?

(a) t = 1.42 s (b) t = 2.55 s (c) t = 2.98 s (d) t = 3.56 s (e) t = 5.45 s

(a) H = 46.2 m (b) H = 53.2 m (c) H = 65.3 m (d) H = 76.0 m (e) H = 82.1 m

(a) |v| = 12.2 m/s (b) |v| = 25.0 m/s (c) |v| = 43.7 m/s (d) |v| = 50.0 m/s (e) |v| = 55.2 m/s

A cannon ball is fired at an angle of 22° above horizontal with an initial speed v_{o} = 250 m/s, reaching a maximum height of h before hitting the ground. (You can neglect air resistance.)

What is the maximum height h reached by the ball?

(a) h = 447 m (b) h = 782 m (c) h = 981 m (d) h = 2420m (e) h = 3185 m

(a) 2h (b) 3h (c) 4h

(a) v_{y} = -250 m/s (b) v_{y} = -94 m/s (c) v_{y} = 0 m/s (d) v_{y} = 94 m/s (e) v_{y} = 250 m/s

(a) 12.5 s (b) 26.7 s (c) 40.0 s (d) 51.3 s (e) 80.0 s

(a) M_{s} = 0.51 x 10^{5} kg (b) M_{s} = 1.02 x 10^{5} kg (c) M_{s} = 2.01 x 10^{5} kg (d) M_{s} = 4.02 x 10^{5} kg (e) M_{s} = 8.04 x 10^{5} kg

(a) F_{S} > F_{L} (b) F_{S} = F_{L} (c) F_{S} < F_{L}

(a) less than 3. (b) more than 3. (c) 3 seconds.

(a) T = 0 (b) T = W (c) T = 2W

(a) F_{N} < W (b) F_{N} = W (c) F_{N} > W

(a) T > W (b) T = W (c) T < W

(a) N = 0 (b) N = F (c) N = W

(a) Case 1 (b) Case 2 (c) The frictional force is the same in both cases

A 75kg box sits on a horizontal floor. Wanting to move the box, you apply a horizontal force to one side of it. You find you have to push with a force of at least 300 N before the box will start moving.

What is the coefficient of static friction m_{S} between the box and the floor?

(a) m_{S} = 0.29 (b) m_{S} = 0.37 (c) m_{S} = 0.41 (d) m_{S} = 0.52 (e) m_{S} = 0.63

(a) a = 2.0 m/s^{2} (b) a = 2.5 m/s^{2} (c) a = 3.0 m/s^{2} (d) a = 3.5 m/s^{2} (e) a = 4.0 m/s^{2}

(a) 0 m (b) 0.51 m (c) 1.02 m (d) 1.51 m (e) 2.76 m

Car A has a mass of 1000 kg and is driving around a horizontal circular track that has a radius of 1500 m. The speed of the car is 45 m/s, and is constant.

The net force on the car:

(a) Is zero. (b) Is pointing radially inward, toward the center of the circle. (c) Is pointing radially outward, away from the center of the circle.

(a) F_{A} = 0 N (b) F_{A} = 1.35 x 10^{3} N (c) F_{A} = 2.41 x 10^{3} N (d) F_{A} = 5.92 x 10^{3} N (e) F_{A} = 7.80 x 10^{3} N