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WorksheetsMidterm Physics
Total questions: 132
Worksheet time: 5hrs 4mins
a 170 lb halfback is tackled by a 245 lb guard. Each, of course, exerts a force on the other. Which of the players exerts the LARGER force on the other?
the 170 lb halfback
the 245 lb guard
neither player
not enough information
a 170 lb halfback is tackled by a 245 lb guard. each, of course, has a resulting acceleration. Which of the players has a LARGER acceleration after the hit?
the 170 lb halfback
the 245 lb guard
neither player
not enough information
A car slides down a frictionless incline. How does the normal force of the incline on the car compare with the weight (or force of gravity) of the car?
the normal force must be equal to the car's weight
the normal force must be less than the car's weight
the normal force must be greater than the car's weight
the normal force must be 0
There is a book sitting at rest on a chair. Which of the following is true?
There are many forces acting on the book, but they balance each other out
The book exerts no force on the chair
The chair exerts no force on the book
all of these
What letter represents an object moving toward the point of reference?
A
B
C
D
A light plastic cart and a heavy steel cart are both pushed with the same force for a distance of 1.0 m, starting from rest. After the force is removed, the velocity of the light plastic cart is ________ that of the heavy steel cart.
greater than
equal to
less than
can't say unless we know how big the force is
A light plastic cart and a heavy steel cart are both pushed with the same force for a distance of 1.0 m, starting from rest. After the force is removed, the kinetic energy of the light plastic cart is ________ that of the heavy steel cart.
greater than
equal to
less than
can't say unless we know how big the force is
A small child slides down the four frictionless slides A–D. Rank in order, from largest to smallest, her speeds at the bottom.
vD > vA > vB > vC
vD > vA = vB > vC
vC > vA > vB > vD
vA = vB = vC = vD
Starting from rest, a marble first rolls down a steeper hill, then down a less steep hill of the same height. Ignoring friction, for which is it going faster at the bottom?
Faster at the bottom of the steeper hill
Faster at the bottom of the less steep hill
Same speed at the bottom of both hills
Can’t say without knowing the mass of the marble
Four students run up the stairs in the time shown. Which student has the largest power output?
A
B
C
D
A basketball that is dropped bounces back up to its original height. Pick the correct energy transformation from the point when it was dropped until it returns to the original height.
KE --> PE --> Elastic
PE --> KE --> Elastic --> KE --> PE
KE --> PE --> Elastic --> PE --> KE
Elastic --> PE --> KE --> Elastic
Here are 3 FBD diagrams for an elevator. Consider them to be A, B, C. Which one shows an elevator accelerating upward?
A
B
C
none of these
Here are 3 FBD diagrams for an elevator. Consider them to be A, B, C. Which one shows an elevator moving upward but braking?
A
B
C
none of these
Here are 3 FBD diagrams for an elevator. Consider them to be A, B, C. Which one shows an elevator moving at a constant rate of 2.5 m/s?
A
B
C
none of these
Is it possible for the object in the diagram to be moving to the right and have this FBD?
Yes. It's possible that the x forces were just left off the diagram.
Yes. It could be moving at a constant velocity.
No. The FBD shows that the system is in equilibrium.
No. An FBD shows all F.
As the angle of the incline increases, what happens to the normal force?
The normal force increases
The normal force decreases
The normal force is not affected by the incline
The normal force is only dependent on the force due to gravity
If there is no friction, then the acceleration would be equal to
mg
sin(θ)mg
g
sin(θ)g
Suzie goes from Home to shopping to lunch to the movies to the gas station. What was her DISTANCE traveled?
24 miles
28 miles
16 miles
29 miles
Suzie goes from Home to shopping to lunch to the movies to the gas station. What was her DISPLACEMENT?
5 miles
13 miles
4 miles
8 miles
A ball is thrown into the air at some angle between 10 and 90 degrees. At the very top of the ball's path, its velocity is _____.
entirely vertical
entirely horizontal
both vertical and horizontal
zero
- What is the distance travelled from 0 to 70 seconds?
- What is the displacement from Tom's house at the end of 70s?
The graph shows the variation with time of the displacement of an object undergoing simple harmonic motion. At which of the following time values is kinetic energy zero?
0 ms
40 ms
80 ms
100 ms
Which of the following is/ are characteristics of simple harmonic motion?
I. The acceleration is constant .
II. The restoring force is proportional to the displacement.
III. The frequency is independent of the amplitude.
II only
I and II only
I and III only
II and III only
I, II, and III
A pendulum oscillates as shown. At which of the following positions is the potential energy equal to the total energy?
A
B
C
Not enough information
A pendulum oscillates as shown. At which of the following positions is the kinetic energy equal to the total energy?
A
B
C
Not enough information given.
Which tube, if the same length, would have the lowest frequency?
The length of the tube is 2 meters. How long is the wavelength of the wave?
1 meter
2 meters
1/2 meter
1/4 meter
This string is in the
1st harmonic
2nd harmonic
3rd harmonic
4th harmonic
Which of the following is true about the speed of sound through different mediums?
V(gas) > V(liquid) > V(solid)
V(liquid) > V(gas) > V(solid)
V(solid) > V(liquid) > V(gas)
V(solid) > V(gas) > V(liquid)
Two waves of amplitude A are initially traveling in the same direction through a rope that is fixed at both ends. When the two waves meet, the resultant wave will have an amplitude of:
A
A2
2A
0
A wave with amplitude A is traveling through a rope. If the rope is fixed on the left but not on the right, then which of the following represents the wave as it returns?
A wave of amplitude A is traveling through a rope that is fixed on both ends. Which of the following represents the wave upon return?
Which is a Longitudinal Wave?
Which is a Transverse Wave?
Look at the diagram. At which positions will the overlapping waves have the most constructive interference?
Positions #1 & #2
Positions #2 & #3
Positions #4 & #5
Positions #6 & #7
If the net torque on an object is 0, then the object will
not rotate or rotate at a constant angular velocity.
rotate with a constant angular acceleration.
not rotate or move in a straight line.
not move in a straight line.
A long rod is suspended by a frictionless bearing near its top. A lump of clay is projected from the right, collides with the block and sticks to it. Which one of the following statements is correct about the clay and rod system for this collision?
The mechanical energy, linear momentum and angular momentum remain constant.
The linear momentum and the angular momentum remain constant but the mechanical energy changes.
Only the angular momentum remains constant.
None of the quantities of mechanical energy, linear momentum, or angular momentum remain constant.
Two uniform solid balls, one of radius R and mass M, the other of radius 2R and mass 8M, roll down a high incline. They start together from rest at the top of the incline. Which one will reach the bottom of the incline first?
The small sphere arrives first.
The large sphere arrives first.
Both reach the bottom at the same time.
A skateboarder rolls off a bridge into the river as shown. If the skateboarder was originally moving at 7.0 m/s, how much time did the skateboarder spend in the air?
1.3 s
0.79 s
38.5 s
0.70 s
Not enough information given.
Which graph could represent a velocity-time graph for an object thrown straight downwards with no air resistance?
A ball of mass m is thrown at a wall with speed u. After it strikes the wall, the ball bounces back with a speed v. What represents the magnitude of the force acting on the ball during the collision?
m(u-v) / t
m(v-u) / t
m(u+v) / t
0
A block of mass M slides across a frictionless surface with velocity v until collides with a stationary block of mass m. If the two blocks stick together, what is their velocity after the collision?
(M+m)v / m
(M-m)v
Mv / (M+m)
(M-m)v / M
The table below shows the velocity and the mass of a golf ball and a bowling ball.
The golf ball and bowling ball undergo an elastic collision. What is the total momentum and energy of the system after the collision?
p = 16 kg*m/s, KE = 84 J
p = 16 kg*m/s, KE = -76 J
p = 0 kg*m/s, KE = -76 J
p = 0 kg*m/s, KE = 84 J
Which of the following statements is true about the image above?
The accelerations of the blocks will vary according to their mass
The net force acting on each block is the same
The blocks will experience the same acceleration
The 3m box will eat the 2m and the m boxes
A stationary horn broadcasts an emergency distress signal at a constant frequency f. A stationary observer hears the signal then begins to walk away from the source. The observer will perceive a frequency that is:
constantly the same as f.
Initially the same as f, with the frequency decreasing.
always greater than f.
Initially the same as f, with the frequency increasing.
According to the information and diagram shown above, what position will have the greatest magnitude of vertical acceleration?
A
B
C
All positions have the same magnitude of acceleration
The diagram below represents two concurrent forces.
Which vector represents the force that will produce equilibrium with these two forces?
At the instant shown in the diagram, the car's centripetal acceleration is directed-
toward E
toward N
toward W
clockwise
