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WorksheetsPRACTICE TEST DAY 2
Total questions: 75
Worksheet time: 1hrs 11mins
What is it?
Pull
Friction
Push
Heavy
A ____________ is a push or a pull on an object.
friction
force
magnet
gravity
Forces that have a net force of zero Newtons
Balanced force
Unbalanced force
Suppose that an astronaut throws a baseball in outer space at a location far from significant influences of gravity and air resistance. One would expect that the baseball would ____.
eventually stop since all objects ultimately "lose their steam"
eventually stop as its inertia slowly becomes used up
continue in motion with the same speed and direction
either a, b, or c -- depending on whether the astronaut continues to push it
All objects have inertia
True
False
Inertia depends on ______
Velocity
Speed
Distance
Mass
A skateboard rolls down a hill, reaches the level surface and eventually comes to a stop. The fact that the skateboard ultimately stops is best explained by ____.
an unbalanced force would be required to keep the sled moving forward at constant speed
the presence of an unbalanced force (e.g., friction) can cause a moving object to stop
the presence of inertia causes it to stop
the natural tendency of any object is to ultimately stop
Mac and Tosh are arguing in the cafeteria. Mac says that if he flings the jello with a greater speed it will have a greater inertia. Tosh argues that inertia does NOT depend upon speed, but rather upon mass. Who is correct?
Mac
Tosh
Neither
Both
More mass = More inertia
True
False
The rate something is traveling in a certain time
(example: miles per hour)
velocity
inertia
speed
The rate something is traveling in a certain direction.
speed
inertia
velocity
The amount of MATTER in an object.
momentum
velocity
mass
Inertia is the tendency of an object to resist a change in its ___________.
temperature
shape
size
motion
the tendency of an object to resist a change in its motion
acceleration
inertia
mass
frame of reference
A force has both strength and _____.
power
direction
color
balance
When Izzy and Zoe pull on the rope with the same amount of force, the forces are _____.
increased
unbalanced
balanced
decreased
Velocity is speed with __________________________.
a unicycle helmet
direction
fight
What is the net force?
3 N
3 N, right
17 N, right
3 N, left
What two factors affect the range of a projectile?
Launch angle and Launch Velocity
Launch Velocity and Acceleration
Launch angle and time
Launch Velocity and time
What is the only force acting on a projectile?
air resistance
gravity
launch force
launch speed
To resolve a vector means to...
find the resultant vector
find the direction of the vector
find the magnitude of the vector
find the x and y components of the vector
What is "30⁰" of "30⁰ at 25 m/s"?
magnitude
direction
x component
y component
A dog is running at 10 m/s at angle of 27 degrees. Find the x velocity of the dog.
8.9 m/s
4.5 m/s
4.6 m/s
26.6 m/s
A soccer ball is kicked and follows the path as shown. At which point is the vertical acceleration equal to - 9.80 s2m ?
X
Y
Both X and Y
Neither X nor Y
When an object is undergoing projectile motion, which of the following are constant? Check all that apply.
vy
vx
ax
ay
What is the horizontal acceleration of a projectile?
0 m/s2
9.8 m/s2
-9.8 m/s2
4.9 m/s2
If you throw a baseball straight up, what is its velocity at the highest point?
9.8 m/s2
9.8 m/s
0 m/s2
0 m/s
If I throw a crayon straight up at 12m/s, how fast is its speed when i catch it at the same height?
6 m/s
12 m/s
18 m/s
24 m/s
At what point is vy= 0 m/s?
A
B
C
D
None of these points
Which vector pair (arrow pair) correctly represents the acceleration and velocity at point P?
A Macaque monkey sitting 12 m up in a tree throws a nut horizontally at 11 m/s. How long will it take the nut to hit the ground?
2.45 s
4.32 s
1.56 s
not enough information
Two spheres of equal mass, A and B, are rolled off the edge of a 2.0 m high bench. Sphere A has a horizontal velocity of 5.0 m/s and sphere B has a horizontal velocity of 2.5 m/s.
Which ball will be in the air for the greater amount of time?
Ball A
Ball B.
They will be in the air for the same amount of time.
here is not enough information to decide.
The shape of the pathway of a projectile is known as a
rainbow
upside down U
path
parabola
When a car goes around a circular curve on a level road, ...
no frictional force is needed because the car simply follows the road.
the frictional force of the road on the car increases when the car's speed decreases.
the frictional force of the road on the car increases when the car's speed increases.
the frictional force of the road on the car increases when the car moves to the outside of the curve.
When moving in a horizontal circular path, what direction is acceleration?
In the opposite direction of motion
Tangential to the circle in the direction of motion
Outwards from the center of the circle
Towards the center of the circle
How is acceleration seen in circular motion?
Velocity increases as the object travels in a circle.
Velocity decreases as the object travels in a circle.
The object changes direction as it travels in a circle.
There is no acceleration as an object travels in a circle.
A 10kg car travels at a constant speed of 20.0 m/s around a horizontal circular track. Which diagram correctly represent the direction of the car's velocity (v) and the direction of the centripetal force (Fc) acting on the car at a particular moment?
