This exam consists of true-false questions worth 2 points each,
traditional multiple-choice questions worth 3 points each, and
enhanced multiple-choice questions worth 6 points each. The maximum
possible score is 105. When the exam was given, the minimum "A" score
was 92; the minimum "B" was 75; the minimum "C" was 57; the minimum
"D" was 3. The mean was 73.6; the median was 75. Click here to see the formula sheet that came with the exam.
(a) ball A hits the ground before ball B.
(b) ball B hits the ground before ball A.
(c) ball A and ball B hit the ground at the same time.
(a) ymax = 275 m
(b) ymax = 490 m
(c) ymax = 368 m
(d) ymax = 608 m
(e) ymax = 530 m
Which of the following is true:
(a) VG = V
(b) VG > V
(c) VG < V
A student who can swim with a speed of 3 m/s in still water
wants to get to the other side of a 400 m wide river whose waters flows
downstream at 2 m/s. If she swims across in such a way that the time
taken is the smallest possible, how far D is she swept downstream of the
point on the opposite bank directly across from her starting point?
(a) 221 m
(b) 400 m
(c) 133 m
(d) 267 m
(e) 333 m
In the above situation, if she instead swims in such a way
that her path as viewed by someone on the shore is straight across the
river, how long does it take to get to the other side?
(a) 179 s
(b) 112 s
(c) 208 s
(d) 92 s
(e) 156 s
A block is released from rest at the top of a frictionless
ramp (inclined plane) that makes an angle of 25° with respect to
horizontal. At the bottom of the ramp, after having slid a distance D1,
the speed of the block is observed to be 12 m/s. What is the length of
the ramp D1?
(a) 8.9 m
(b) 11.8 m
(c) 13.7 m
(d) 15.2 m
(e) 17.4 m
(a) 8.5 m/s
(b) 6.9 m/s
(c) 9.3 m/s
(d) 14.2 m/s
(e) 7.7 m/s
(a) The average acceleration of car A is less than the average acceleration of car B.
(b) The average acceleration of car A is greater than the average acceleration of car B.
(c) The average acceleration of car A is the same as the average acceleration of car B.
(a) 108 m/s
(b) 94 m/s
(c) 65 m/s
(d) 70 m/s
(e) 82 m/s
(a) Speed decreasing and turning upward.
(b) Speed increasing and turning downward.
(c) Speed constant and turning upwards.
A block of mass 50 kg is free to slide on a horizontal
frictionless surface. A force F is applied as shown in the drawing,
where the angle of the force above horizontal is 20°. As a result,
the block has a horizontal acceleration of 4 m/s2. What is
the magnitude of the applied force F?
(a) 124 N
(b) 343 N
(c) 180 N
(d) 367 N
(e) 213 N
A block of mass 50 kg is free to slide on a frictionless
inclined plane that makes an angle of 20° with respect to
horizontal. A force F is applied as shown in the drawing, this time
pulling parallel to the plane. As a result, the block
accelerates up the plane at 4 m/s2. What is the magnitude of
the applied force F?
(a) T > To
(b) T = To
(c) T < To
(a) 3.2 × 103 N
(b) 6.6 × 103 N
(c) 9.8 × 103 N
(d) 1.3 × 104 N
(e) 1.5 × 104 N
(a) Ball 1 hits the ground before Ball 2.
(b) Ball 1 hits the ground at the same time as Ball 2.
(c) Ball 1 hits the ground after Ball 2.
(a) 47.9 m/s
(b) 46.4 m/s
(c) 33.9 m/s
(d) 23.2 m/s
(e) 16.9 m/s