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WorksheetsPhysics Q1 Final
Total questions: 57
Worksheet time: 2hrs 54mins
1. In addition to time, which of the following must be used for a more complete description of the average acceleration of an object?
Mass
Displacement
Velocity
None of these
Velocity is...
The rate of change of acceleration
The rate of change of displacement
The rate of change of distance
The rate of change of speed
What is the acceleration of an object moving at constant velocity?
2 m/s2
1 m/s2
0 m/s2
0.8 m/s2
When velocity is negative and acceleration is negative, what happens to the object’s motion?
The object slows down
The object speeds up
Nothing happens to the objects motion
The object remains at rest
What is the difference between a vector quantity and a scalar quantity?
A scalar has a magnitude and direction and a vector has only a magnitude
A vector has a magnitude and direction and a scalar has only a magnitude
A scalar has a direction and a vector has a magnitude
None of the above
A bird flies 5 m/s. How far has the bird traveled after 1 min?
5 m
12 m
120 m
300 m
A toy car is given an initial velocity of 4 m/s and experiences a constant acceleration of 1 m/s2. What is the final velocity after 5 seconds?
20 m/s
10 m/s
9 m/s
5 m/s
Which of the following is a vector quantity?
Velocity
Acceleration
Displacement
All of the above
What is the speed of an object at rest
0 m/s
1 m/s
9.8 m/s
10 m/s
A dolphin swims 1.85 km/hr. How far has the dolphin travelled after 0.6hr?
1.1 km
2.5 km
0.63 km
3.7 km
When the velocity is positive and the acceleration is negative, what happens to the objects motion?
The object slows down
The object speeds up
Nothing happens to the object
The object remains at rest
A toy car is given an initial velocity of 5m/s and experiences a constant acceleration of 2 m/s2 for 6 seconds. What is the final velocity of the car?
10 m/s
12 m/s
16 m/s
17 m/s
Acceleration due to gravity is also called...
negative velocity
displacement
free fall acceleration
instantaneous velocity
A coin released from rest from the top of a tower hits the ground after 1.5 seconds. What is the speed of the coin as it hits the ground?
15 m/s
21 m/s
31 m/s
39 m/s
What is the difference between the displacement of a traveler who takes a train from San Francisco to Los Angeles and the displacement of a traveler who flies from Los Angeles to San Francisco
They are the same
Displacement of the second traveler is greater
They are of equal magnitude but opposite sign
None of the above
A baseball catcher throws a ball straight up and catches it in the same spot. A what point in the balls trajectory does it experience a velocity of zero.
Midway on the way up
At its peak height
The instant it leaves the catchers hand
The instant before it arrives in the catchers mitt
For an object tossed straight up into the air, the velocity at the top of trajectory is
a. Zero
b. Vx
c. Vy
d. -9.8m/s2
If the object is thrown at an angle of 30o to the horizontal, the velocity at the top of the trajectory is
a. Zero
b. V0x
c. V0y
d. -9.8m/s2
What direction is acceleration in projectile motion?
a. Left
b. Right
c. Up
d. Down
Which would hit the ground faster in the absence of air resistance, a feather or a bowling ball?
a. The feather
b. The bowling ball
c. They both hit the ground at the same time
d. they are suspend in the air
When velocity is negative and acceleration is negative, what happens to the object's motion?
a. The object slows down
b. The object speeds up
c. Nothing happens to the object
d. The object remains at rest
What type of movement is the result of an acceleration?
a. Speeding up
b. Slowing down
c. Changing direction
d. all of the above
A bird is traveling 10m/s west encounters a strong wind is traveling 6 m/s north. What is the magnitude of the bird's resultant velocity?
a. 4.1 m/s
b. 16.3 m/s
c. 11.7 m/s
d. 10.7 m/s
Vector A has a magnitude of 30 units. Vector B is perpendicular to Vector A and has a magnitude of 40 units. What would the magnitude of the resultant vector A+B be ?
A.10 units
B. 50 units
C. 70 units
D. zero
What term represents the magnitude of a velocity vector?
A. acceleration
B. momentum
C. speed
D. velocity
A motorboat heads due east at 5 m/s across a river that flows towards the south at 5 m/s.
What is the resultant velocity relative to an observer on the shore?
A. 3.2 m/s to the southeast
B. 5.0 m/s to the southeast
C. 7.1 m/s to the southeast
D. 10.0 m/s to the southeast
A motorboat heads due east at 5 m/s across a river that flows towards the south at 5 m/s.
If the river is 125m wide, how long does the boat take to cross the river?
A. 39 s
B. 25 s
C. 17 s
D. 12 s
A golfer takes two putts to sink his ball in the hole once he is on the green. The first putts displaces the ball 6.00 m east, and the second putt displaces the ball 5.40 m south. What displacement would put the ball in the hole in one putt?
A. 11.40 m southeast
B. 8.07 m at 48.0o south of east
C. 3.32 m at 42.00 south of east
D. 8.07 m at 42.0o south of east
A girl throws a tennis ball horizontally forward with a speed of 3 m/s from a height of 1.5 m. At the same moment, a boy standing next to her drops a tennis ball straight down from a height of 1.5 m.
What is the initial vertical speed of the girl's ball?
A. 0 m/s
B. 1.5 m/s
C. 2.0 m/s
D. 3.0 m/s
A girl throws a tennis ball horizontally forward with a speed of 3 m/s from a height of 1.5 m. At the same moment, a boy standing next to her drops a tennis ball straight down for a height of 1.5 m.
If air resistance is disregarded, which ball will hit the ground first?
A. the boy's ball
B. the girl's ball
C. neither
D. they land at the same time.
What has no effect on the time a horizontally launched projectile spends in the air
A. Mass
B. Initial Velocity
C. Height
D. A and B
E. All of the above
A projectile is launched at 20 m/s at 250 above the horizontal. If another projectile is launched at the same speed, what angle will yield the same range as the first projectile?
A. 450
B. 550
C. 650
D. 750
A projectile is launched at 20 m/s at 250 above the horizontal. If another projectile is launched at the same speed, what angle will yield the same range as the first projectile?
A. 450
B. 550
C. 650
D. 750
A pebble is dropped from the top of a high cliff. If it hits the ground 4 seconds later, what is the final velocity of the pebble right before it hits the ground?
A. 20 m/s
B. 40 m/s
C. 60 m/s
D. 80 m/s
An object moves 20 meters east in 10 seconds, then 10 meters west in 5 seconds...
What is the average speed of the object?
A. 0 m/s
B. 0.5 m/s
C. 0.67 m/s
D. 2 m/s
An object moves 20 meters east in 10 seconds, then 10 meters west in 5 seconds...
What is the average velocity of the object?
A. 0 m/s
B. 0.5 m/s
C. 0.67 m/s
D. 2 m/s
A change in velocity is called
Inertia
Acceleration
Net Force
Speed
You are moving a dresser that has a mass of 36kg. Its acceleration is 0.5 m/s2. What is the force being applied?
72 N
35.5 N
1.8 N
18 N
Which of the following is not an acceleration?
a. Turning your bike around a corner
b. Applying the breaks as you approach an intersection
c. Pedaling faster to beat a read light.
d. Riding your bike straight down the street at a constant speed.
the law of interia applies to
a. Objects at rest
b. Moving objects
c. Both moving A and B
One object has twice as much mass as another object. The first object also has twice as much....
a. velocity
b. Gravitational acceleration
c. Energy
d. Interia
e. All of the above
Friction is a force that always acts
a. Perpendicular to the object's motion
b. Opposite to the objects motion
c. In the same direction as the object's motion
d. none of the above
An object weighs 30N on Earth. A second object weighs 30N on the moon. Which had the greater mass?
a. they have the same mass
b. the one on the Earth
c. the one the moon
d. Not enough information to say
The mass of the dog that weighs 100 N is about
a. 100kg
b. 1kg
c. 10kg
d. 1000 kg
e. None of the above
Which has more MASS? A kilogram of feathers or a kilogram of iron?
a. They have the same mass
b. The feathers
c. the iron
Consider a ball rolling down a ramp. Its acceleration...
a. Increases
b. Decreases
c. Is constant
A girl pulls on a 10kg wagon with a constant force of 30N. What is the wagon's acceleration?
a. 30m/s2
b. 300m/s2
c. 10m/s2
d. 3m/s2
e. 0.3m/s2
Accelerations are produced by
a. Accelerations
b. Velocities
c. Forces
d. Masses
e. none of the above
An apple weighs 1N. The net force on the apple when it is in free fall is
a. 1N
b. 9.8N
c. 0N
d. 0.1N
e. None of the above
A tennis ball and a steel ball the same size are dropped at the same time. Which ball has the greater force acting on it?
a. They both have the same force acting on the them
b. The steel ball
c. The tennis ball
A person is attracted towards the center of the Earth by a 500N gravitational force. The force with which the Earth is attracted toward the person is
a. Very very large
b. Very very small
c. 500N
A karate chop delivers a blow of 3000N to a board that breaks. The force that acts on the hand during the feat is
a. 3000N
b. cannot be determined
c. Less than 300N
d. More than 300N
A balloon rocket is able to accelerate when air is released from the balloon. The force that propels the balloon rocket is the force
a. Of the balloon rocket on the air
b. Of the air on the balloon rocket
c. None of the above
When the air is released from a balloon the air moves in one direction and the balloon moves in another direction. Which statement does this situation best illuminate?
a. what goes up must come down
b. For every action there is an equal and opposite reaction
c. The shape and size of an object affects the air resistance
d. The acceleration due to Earth's gravity is 9.8m/s
Consider a ball rolling down a ramp. Its velocity...
a. Increases
b. Decreases
c. Is constant
A typical bathroom scale measures the...
Applied Force
Normal Force
Gravitational Force
Friction Force
If one object slides across a surface, what factors effect how much friction will occur
The weight of the object
The materials of the surface
Irregularities in the surface
All of the above
