15.
Which of the curves on the graph below best represents vy vs. t, where vy is the y
component of the velocity and the y-axis points up, for a projectile fired at an
angle of 45, above the horizontal?
16.
Dana uses a rope to pull a box that weighs 300 N
15.
Two forces, one with a magnitude of 3 N and the other with a magnitude of 5 N,
are applied to an object. For which orientations of the forces is the magnitude of
the acceleration of the object the most?
a.
b.
c.
d.
e.
16.
An object is projected from t
9.
A baseball is thrown by the centerfielder (from shoulder level) to home plate
where it is caught (on the fly at shoulder level) by the catcher. At what point
during the flight is the balls speed at a minimum? (Resistance is negligible.)
a.
b.
c.
d.
e.
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1) Starting from city A, a car drives 300 miles east to city B, then 300 miles north to
city C, and finally 700 miles west to city D. What is the distance
1. A small ball collides with a large ball. Which set of arrows best describes the contact force
that each exerts on the other?
(The left arrow refers to the force on the left, smaller ball.)
a.
b.
c.
d.
e.
2.
Two masses are connected by a string which pa
3.
A box with a weight of 50 N rests on a horizontal surface. A person pulls
horizontally on it with a force of 10 N and it does not move. To start it moving, a
second person pulls vertically upward on the box. If the coefficient of static
friction is 0.4
18.
Find the tension in an elevator cable if the 1000 kg elevator it supports is
descending with an acceleration of 1.8 m/s2, downward.
a.
b.
c.
d.
e.
A European sports car dealer claims that his product will accelerate at a constant
rate from rest to a s
17.
In this class we generally neglect air resistance but one can compute the size of
the force on an object due to such resistance under some circumstances. One
formula for such a force (called the drag force) is:
Fdrag = C v 2 A
where A is an area, is a
20.
A stone is thrown at an angle of 30.0 above the horizontal from the top edge of a
cliff with an initial speed of 12.0 m/s. A stop watch measures the stones
trajectory time from top of cliff to bottom to be 5.60 s. What is the height of the
cliff? (g =
23.
A map leading you to buried treasure instructs you to start from a particular palm
tree on Gilligans island. From the tree you are to move 4.50 m due north
followed by 3.20 m west and finally 1.41 m northwest (45 N of W). How far is
this final positio
6.
Consider the following five graphs (note the axes carefully). Which of these represent(s)
motion at constant speed?
a.
b.
c.
d.
e.
7.
A ball is thrown vertically up with a speed of 20.0 m/s by a person standing on a balcony
located 25.0 m above the gro
Seat #
Physics P201
D. Baxter/R. Heinz
EXAM #1
September 26, 2002
7:009:00 PM
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INSTRUCTIONS
Th
1. Sit in SEAT # given above.
2. DO NOT OPEN THE EXAM UNTIL YOU ARE TOLD TO DO SO.
3. Print your
11.
An airplane of mass 1.2 104 kg tows a glider of mass 0.6 104 kg. The airplane
propellers provide a net forward thrust of 3.6 104 N. What is the gliders
acceleration?
a.
b.
c.
d.
e.
A block slides down a frictionless ramp with an acceleration whose mag
9) An object is thrown upward with a speed of 12 m/s on the surface of Planet X where the
acceleration due to gravity is 1.5 m/s2. What is the maximum height reached by the object?
A) 4.0 m
B) 18 m
C) 8.0 m
D) 144 m
E) 48 m
10) A car starting from rest mo
4.
In the figure below, an airport luggage train with a tractor T is pulling three
luggage carts, M1 , M 2 , and M3 .with an acceleration of 1.2 m/s 2 . If T = 300 kg,
M1 = 200 kg, M 2 =100 kg, and M3 =100 kg, then the force in the connection
between cart
23.
A P201 student throws a ball straight up. At the top of its trajectory its
acceleration is
a.
b.
c.
d.
e.
24.
9.8 m/s2 up
4.9 m/s2 up
zero
9.8 m/s2 down
4.9 m/s2 down
A spider sits on a turntable that is rotating at a constant angular velocity of 33
r
1.
A car moving to the right collides head on with a car moving to the left. The cars
have different speeds and masses. Which statement is true.
a. The faster car exerts a greater magnitude of force on the slower car than the
slower car exerts on the fast
16) A boat, whose speed in still water is 8.0 m/s, is aimed across a river with a current of 6.0 m/s. If
the river is 800 m wide, how far will the boat travel in crossing the river?
A) 600 m
B) 800 m
C) 1000 m
D) 1400 m E) 1600 m
17) A ball thrown horizon
13.
Felipe is going for a physical before joining the swim team. He is concerned
about his weight, so he carries his scale into the elevator to check his weight while
heading to the doctor's office on the 21st floor of the building. If his scale reads
750
19.
The figure below shows the vertical velocity component of an elevator versus time. If
the elevator starts to move at t = 0 s, when is the elevator at its highest location above the
starting point?
a.
b.
c.
d.
e.
20.
A projectile of mass m1 is propelle
15.
A 16 lb fish is weighed with two spring scales, each of negligible weight, as
shown here. Which statement is true?
An object is thrown vertically up into the air. Which of the following five graphs
represents y component of the velocity (v) of the obj
9.
The drag force of an object moving in air is given by F = bv 2 , where F is force in
Newtons and v is velocity in meters/second. The dimensions of the constant b are,
a.
b.
c.
d.
e.
10.
A car accelerates from rest to 67.0 m/s over a distance of 400.0 m
14.
The object in the diagram below has three forces applied to it. F1 is 20 N up, F2 is 30 N
down, and F3 is 25 N at an angle of 45o above the horizontal. The net force on the object
is, (horizontal to right = + X axis, vertical up= + Y axis)
a. net Fx =
13. A bowling ball Is thrown Straight up in the air 7 meters. What is the acceleration of the
ball when it is 3.5 meters high on the upward part of its trajectory?
Om/sz A+ oJ 00 \/&( dwa
-9.8 m/s2
C) 19.6m/sz +5236 (+0 (8/ H41 ValdCda,
D) -29.4 m/s2
E) -
A) From when it is at point C to when it is at point D. Ma $+ OJCQ. U) 8 r
B)0t0105ec~0b0e$
C)10toZOsec 4, [1 (905403 CUer Ts 10 -30 S00
D)15toZSsec A, 2-2 bok$
@20t0305ec a, 3A boXGS
7. In the graph above, it which point is acceleration most positive?
;
Exam 1 Formula Sheet:
Displacement: A x =x/7 x1
Average speed: ave speed = distance/time
Average velocity: V =1=xfx,
aw
At rf- t,
Instantaneous velocity: v 2 lim it
A t -'0 A r
Average acceleration: a =_A_V= I V:
m
A t 1":
Instantaneous acceleration
> >
11. Look at the diagrams below. Which gure shows 20 P?
following is TRUE? 1
+
\
S
E time
U)
0
Q.
A) The objects acceleration is _
positive at point 1. [\l o \ 3 all?
8 Th 't d fth b ct C
) emagniueo eOJe 5 7+ L1 V0 ch QUJV
acceleration is greatest
Version 1
NAME 33 ll/Clb OH 3
Exam 1 Physics P201
Sept. 18, 2014
This is a closed book exam. You may use a handheld calculator.
You should use a #2 pencil.
You will need to show your picture ID when you turn in the
exam.
Instructions:
1) Do not open the e
Consider the diagram below in answering the next few questions. A man wishes to row across a
river from New Jersey (NJ) to New York (NY). He can row 2 m/s in still water and the river is
owing at 1 m/s as shown. The distance straight across the river is 1
Efufon In HMl' wtllk M=V;l: Jo; 4%
4. Assume that t is the tmejttakes for the ball to travel a horizontal distance of 10 m. Because
the ball machine is aimed properly, this also will be the time at which stunt woman catches it.
Which of the following is t
15. For the same rookdescribed above In question 14, calculate the magnitude and angle of
the rock 5 velocity vector after 3 seconds of free fall. Again, neglect air resistance.
its >< vwb H3
A) 100 m/s, 10 below the horizontal UW Pram OMS Md 04 l
B) 100
Questions 1 - 5 will refer to this diagram and description. At a carnival, a stunt-woman is seated
at a height h meters above a pool, as seen in the diagram. When she presses a button, her seat
drops and she begins falling toward the pool. At exactly the
2. Which of the following the correct expression for the y-component of the tennis balls
initial velocity, V. ?
.1703]: 15* sin 30m %
Q
B) voy - 15* c0530 0 45A
+[5m 3mg) 37
C) 170),: 15* tan 30 V 30
1
Dlvoy_ 9.8* 15*tan30
E)voy = -9.8* 15?*tan30
3. Which
17. Look at the gure below. A car is moving toward the right at constant velocity, which we
take to be in the positive x direction. The driver puts on the brakes, reducing the speed to
another constant velocity. Which of the following velocity versus time
3.
At what altitude above the Earth's surface would your weight be 1/4 of what it is at the
Earth's surface? (The radius of the Earth is 6371 km.)
a.
b.
c.
d.
e.
4.
Two masses are being pulled up a 30 degrees incline by a force F parallel to the incline.