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WorksheetsG9 ASP review T2
Total questions: 110
Worksheet time: 9hrs 10mins
The speedometer on your car measures___.
average speed.
average velocity.
instantaneous speed.
instantaneous velocity.
Which of the following map directions is equivalent to the Cartesian 180°?
000T
090T
270T
360T
The resultant is the arithmetic sum of the magnitudes only if
the vectors are in the same direction.
the vectors are in opposite directions.
one vector is perpendicular to the other.
the magnitudes of the vectors are the same.
Which is not necessarily true about similar triangles?
Their corresponding sides are proportional.
Their angles are sufficient to determine similarity.
Their corresponding sides are congruent.
Their corresponding angles are congruent.
Find the resultant of a vector whose component vectors are +5.50 m vertically and +9.50 m horizontally. Use an order-of-magnitude estimation to choose the correct answer.
11 m
3.87 m
15 m
4 m
If the length of one leg of a right triangle is 4.5 m and the length of the hypotenuse is 10.2 m , what is the length of the other leg?
2.39 m
9.15 m
5.7 m
14.7 m
If a vector's reference angle is 45° and it lies in the third quadrant, what is the vector angle?
q = 45°
q = 135°
q = 225°
q = 315°
The study of the causes of motion is called (a) .
A physical quantity that has both a _____ and a ______ associated with it is called vector quantity.
(a)
Map directions are measured from (a) .
A vector diagram has three essential parts: The magnitude, the ____ and the ____
(a)
Triangles containing a 90° angle are called ________ triangles.
Isosceles
right
complementary
equilateral
Two vectors are considered equal as long as they have the same magnitude.
True
False
Scalar quantities are negative.
Never
Sometimes
Always
f an object travels in a straight line, the magnitude of its displacement will be equal to ____.
the distance traveled
the opposite displacement
the average speed
zero
The study of the causes and the description of motion is called____.
dynamics
kinematics
mechanics
physics
The slope of a two-dimensional velocity-time graph gives
gravity
speed
average velocity
acceleration
Which of the following are not vector quantity?
acceleration
speed
displacement
velocity
total distance
The equations of motion apply only if___.
velocity is constant
displacement is constant
acceleration is constant
motion is horizontal
A ball is dropped from an 120.0 m building. What is the ball's velocity after 1 min? Use an order-of magnitude estimation to identify the correct choice. Vf=Vi +( a .Δt)
588.6 m/s
120 m/s
12.24 m/s
1176 m/s
direction
In practice A of the figure, what is the direction of the resultant displacement?
South of East
North of East
North of West
South of West
A deer running 15 meters per second due west
100 N 230 N
<------ --------->
A vector is a ray with both ____________ and _____________.
Wings and halos
Space and time
Direction and magnitude
Radicals and exponents
Find the magnitude.
0
5
-5
4
Find the length of the resultant.
4
5
3
square root of 5
What is the horizontal length?
4
5
3
square root of 5
What is the vertical length?
4
5
3
square root of 5
In practice B of the figure, which displacement is the vertical component?
30 km, East
30 km, West
40 km, North
40 km, South
In practice B of the figure, which displacement is the resultant?
50 km, Northeast
70 km, Southwest
70 km, Northwest
50 km, Southwest
The force that one surface exerts on another when the two rub against each other is called
friction.
inertia.
acceleration
gravity
In which direction does friction force act?
Direction opposite of object's motion.
In same direction as object's motion.
Up direction.
Down direction.
Which object has the most sliding friction (kinetic friction) with the sloping surface?
All objects have equal masses. The slope material is the same for all objects.
Object #1
Object #4
Object #3
All have equal friction.
Which type of friction is the strongest? (has the greatest force)
Kinetic friction (sliding friction)
Rolling friction
Static friction
All forms of friction are equal for the same object.
Static friction prevents motion between surfaces in contact.
True
False
Friction depends on _____ surfaces in contact.
1
2
3
4
Coefficient of friction is represented with? μ
μ
β
θ
α
What is the sign of horizontal velocity Vx at point B
+
-
0
What is the sign of vertical velocity Vy at point B
+
-
0
What is the sign of the vertical velocity Vy at point C, before hitting the ground?
+
-
0
What is the sign of the horizontal velocity Vx at point C, before hitting the ground?
+
-
0
What happens to the horizontal velocity Vx when the ball moves from A to B (going up)
increases
decreases
remains constant
What happens to the vertical velocity Vy when the ball moves from A to B (going up)
increases
decreases
remains constant
What happens to the horizontal velocity Vx when the ball moves from B to C (going down)
increases
decreases
remains constant
What happens to the vertical velocity Vy when the ball moves from B to C (going down)
increases
decreases
remains constant
A projectile is launched with 45m/s at an angle 30o above the horizontal. What is the Vx when the projectile hits the ground.
22.5 m/s
35.7 m/s
39 m/s
45 m/s
A projectile is launched with 45m/s at an angle 30o above the horizontal. What is the Vy when the projectile hits the ground.
+ 22.5 m/s
+ 39 m/s
- 22.5 m/s
- 39.5 m/s
What is the initial height of the parabola?
h = 0.563
h = 10.063
h = 5
h = 1.356
The pathway of an arrow can be represented by the equation h = -16t2 + 80t + 25, where h is the height in feet and t is the time in seconds. What is the maximum height?
h = 125 feet
h = 80 feet
h = 95 feet
h = 140 feet
A rock is dropped from a bridge 320 feet above a river. The pathway that the rock takes can be modeled by the equation h = -16t2 + 320. How long will it take the rock to reach the river (ground)?
4.5 seconds
2.5 seconds
3.8 seconds
3.5 seconds
Joe Mauer hits a fly ball. You can track the height of the ball using the equation: h(t) = -16t2 + 140t + 2. What is the starting height of the ball?
-16 feet
140 feet
2 feet
0 feet
h = -16t2 + 64t + 960.
When did the ball hit the ground?
The ability to do work or cause change:
work
energy
momentum
power
Energy in the form of motion.
mechanical energy
potential energy
kinetic energy
momentum
Stored energy in the form of position or condition.
potential energy
kinetic energy
momentum
mechanical energy
A soccer player kicks a ball with 20 Newtons of force causing it to travel 100 meters. How much work is done on the ball?
200 J
80 J
5 J
2000 J
A worker climbs a ladder and does 8 J of work on a 2 N object. What is the distance they lift the object?
18 m
4 m
10 m
6 m
Where is the kinetic energy of pendulum at its highest?
at the top of the swing
at the bottom of the swing
at 1/4 of the swing
at 3/4 of the swing
At which point of this roller coaster is the energy 1/2 kinetic and 1/2 potential?
A
B
C
D
Two workers use 100 N of force to move a sofa 2 meters in 2 seconds. How much power is required?
100 watts
400 watts
104 watts
50 watts
The SI unit for power is...?
Watts
Joules
Newtons
Metres
Suppose a cart has a kinetic energy of 0.5 J. If you add enough mass to double the mass and make the cart go three times as fast, its kinetic energy is now ---.
6 J
3 J
18 J
9 J
Two equal mass marbles are at the top of a ramp. One marble falls to the ground off the back while the other rolls down the ramp. What is true about the marbles when they reach the ground?
The marble that rolled down the ramp is moving faster than the marble that fell.
The marble that fell down the back of the ramp is moving faster than the marble that rolled.
The marble that rolled down the ramp is not moving when it reaches the ground.
The two marbles are moving with the same speed.
A block starts at rest at point P at the top of a ramp which is height h above the ground. The block slides down one side and up the other, stopping at a point less than h above the ground.
The block did not go as high on the other side because gravity pulls down.
The block did not go as high on the other side because potential energy always has to decrease.
The block did not go as high on the other side because work from friction made the mechanical energy less.
The situation as described is impossible to happen.
If there is no friction on this track, at which point would the coaster have the most kinetic energy?
A
B
C
D
A 40-kg person is climbing 3 m up a flight of stairs in 6 seconds. How much power did they exert climbing the stairs?
400 W
1200 W
200 W
120 W
What effect do external forces like an applied force, friction force, or drag force have?
They have no effect on a system's mechanical energy.
They convert kinetic energy into potential energy.
They convert potential energy into kinetic energy.
They convert between mechanical energy and other forms of energy to change the total mechanical energy of the system.
How does conservation of energy explain why something that is falling should speed up?
It gains kinetic energy because it gains potential energy.
It loses kinetic energy because no work was done on it.
It gains kinetic energy because it loses potential energy.
It loses kinetic energy because the Earth gains potential energy.
