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Conceptual Physics Semester 1 Flashcards | StudBud
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Conceptual Physics Semester 1
Conceptual Physics Semester 1
32 terms
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Conceptual Physics Linear Motion, Projectiles, Newton's Laws, Momentum, Energy
Flashcards
32 cards
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Questions
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Answers
1
A ball is dropped from a tower and an equally sized ball is thrown horizontally simultaneously
the speed of the thrown ball determines which hits first
the thrown ball hits first
they hit at the same time
the dropped ball hits first
2
Objects of the same temperature but different specific heat are placed in identical tubs of H
2
O
depends on difference in specific heat between object & H2O
temperature change will be the same for both
greater change in temperature for lower specific heat
greater change in temperature for higher specific heat
3
A projectile fired at what angle will travel the farthest distance?
60°
90°
30°
45°
4
What is the MA of a 10-m long ramp that is 3-m tall if you slide a 50-kg box with 147-N?
3.33
1470-J
0.3
147-J
5
Heat transfer via the vibrating of particles that collide with one another
Radiation
Convection
Conduction
Kinematics
6
An 450kg object moving 7.5m/s hits a stationary 70kg object and they stick, what is the V
f
?
7.5-m/s
4.2-m/s
6.5-m/s
1.2-m/s
7
A semi-truck hits a traffic cone, compared to the force on the truck the force on the cone
depends on the size of the cone
is equal
is smaller
is larger
8
A 450kg object moving 7.5m/s hits a stationary 70kg object, bounces at -3m/s, what is the V
f
?
6.1-m/s
67.5-m/s
7.0-m/s
28.9-m/s
9
When an object reaches terminal velocity which of the following is most correct?
there is no longer any air resistance
the weight of the object is equal to the air resistance
the object's velocity is zero
there are no forces acting on the object
10
A semi-truck hits a traffic cone, compared to the impulse on the truck, the cone's is
larger
smaller
equal
11
What is the acceleration of a ball that takes 30-s to reach a velocity of 45-m/s from rest?
1350-m/s2
1.5-m/s2
0.67-m/s2
75-m/s2
12
Which of the following is not a vector quantity?
Mass
Force
Velocity
Acceleration
13
What is the vertical component of a 30-m/s object fired at 15° above horizontal?
7.76-m/s
15-m/s
30-m/s
28.98-m/s
14
How high could a baseball go if it was thrown 15-m/s at 45°?
11.4-m
1.08-m
1.53-m
5.7-m
15
Which is not true for a constantly accelerating object
must have an impulse
must have momentum
must move in a straight line path
must have a force acting on it
16
Which is not a reason a loaded train takes longer to stop than an empty train at the same speed
the loaded train has more inertia
the loaded train has more momentum
the loaded train is longer
the loaded train has more kinetic energy
17
rate of the distance travelled in a certain direction per unit time
Kinetic Energy
Speed
Acceleration
Velocity
18
An object is lifted to 3-m resulting in a potential energy of 9-J, if dropped
the kinetic energy would be 9-J when it hits the ground
the object has a mass of 3-kg when it hits the ground
the work done would be 27-J when it hits the ground
the velocity would be 9-m/s when it hits the ground
19
Objects A & B of differing mass are in a portion of space, not moving. The force of gravity
is greater on the less massive object
is greater on the more massive object
between the objects is equal
is proportionate is inversely proportional to their masses
20
What is the work required to deadlift 50-kg to a height of 0.5-m?
6.25-J
245-J
490-J
25-J
21
What would be the acceleration of a 1250-kg car that whose engine puts out 750-N?
937500-m/s2
1.67-m/s2
0.6-m/s2
2000-m/s2
22
How high is a cliff if an object thrown horizontal at 2-m/s takes 2.5-s to hit the ground?
30.6-m
19.6-m
61.25-m
5-m
23
A semi-truck hits a traffic cone, compared to the change in momentum of the truck, the cone's
momentum cannot change
is equal
is smaller
is larger
24
Energy loss by 35-g of metal placed in 50g of water, if water temp changes from 23°C to 50°C
47250-J
5.6484-J
-5648.4-J
3.9539-J
25
When a projectile is fired at an angle & is flying along
its acceleration varies based on the angle of release
its acceleration is zero at its highest point
its acceleration is constant throughout
its acceleration is greatest at its highest point
26
Box A has a mass of 50-kg, Box B has a mass of 35-kg. If 30-N is applied, what is F
A on B
?
10.5-N
12.3-N
0.35-N
17.5-N
27
Which is not true of objects fired at the same speed at complementary angles?
they have the same horizontal displacement
they have different hang times
they have different vertical components of velocity
they have the same maximum height
28
When a projectile is fired at an angle & is flying along, at it's zenith (highest point)
it's motion is only in the vertical
it's motion is only in the horizontal
it's motion is equal in the vertical and horizontal
it's motion in the vertical and horizontal cannot change
29
If you threw a 5-kg stone horizontally at 15m/s from 1000-m cliff, how far away would it land?
214-m
1000-m
14.29-m
66.7-m
30
Two objects of differing mass are in a portion of space where gravity is negligible, not moving
the more massive object must be larger
the less massive object would be easier to lift
lifted with the same force they would accelerate equally
the more massive object would be harder to shake
31
Which is not true of the horizontal component of a projectile's motion?
it is independent of vertical displacement
the horizontal velocity component is independent of gravity
it is independent of time
it is independent of the vertical component of velocity
32
A semi-truck hits a traffic cone, compared to the acceleration of the truck, the cone's is
larger
smaller
equal
