Transcript same horizontal velocity.

A science class takes a toy cart
and rolls it down an incline.
They measure the distance the
cart travels. The investigation is
repeated changing the angle of
incline of the ramp. The mass of
the cart and the length of the
ramp are kept constant. What is
the relationship being studied?
For 1000 points
The effect of the angle of
incline of the ramp on distance
the cart travels.
A science class takes a toy cart
and rolls it down an incline. They
measure the distance the cart
travels. The investigation is
repeated changing the angle of
incline of the ramp. The mass of
the cart and the length of the ramp
are kept constant. What are the
dependent and independent
variables?
For 15000 points
dependent variable – distance
cart travels
independent variable – angle of
incline
Write the general mathematical
question for each graph depicted
below.
For 500 points
a. y = b
b. y2 = mx + b
c. y = m(1/x) + b
d. y = mx + b
e. y = mx2 + b
How would you make a straight line
graph for the data below?
For 800 points
Invert the volume values
What is the relationship between
the variables for the graph below.
For 400 points
Pressure is inversely
proportional to volume
Explain the relative motion for the
two objects below.
For 200 points
Object 2 moves slower than
object 1 and moves toward the
origin, while object 1 moves
away from the origin.
Explain the relative motion of the
two objects in the graph below.
For 1000 points
Object 2 is not moving, while
object 1 moves at a constant
speed away from the origin.
Describe the relative motion for the
two objects in the graph below.
For 6000 points
Objects 1 and 2 move at the
same speed.
What is the average speed for the object
shown in the graph below?
For 600 points
5 m/s
How far did the car below travel in
3 seconds?
For 500 points
75 m
What is speed?
For 400 points
Speed is the distance covered
per unit of time, or a measure of
how fast an object is moving
What value is obtained by
looking at the speedometer in a
moving car?
For 800 points
instantaneous speed
If you take a trip that covers 200 km in
4 hours, what is your average speed?
For 200 points
50 km/h
What is the pair to the force of a
ball pulling on the earth?
For 800 points
The earth pulling on the ball
If a horse exerts a force of 350
N on a wagon to make it
accelerate, what force does the
wagon exert on the horse?
For 10000 points
350 N
What is the law of inertia?
For 4000 points
An object in motion will stay in
motion and an object at rest will
stay at rest unless acted on by
an outside force.
After a cannonball is fired into
frictionless space, how much force
is required to keep it going?
For 500 points
No force is required to keep it
going, only to stop it
What causes friction?
For 5000 points
Friction is caused by
microscopic bumps that act as
obstructions to the object’s
motion and always acts
opposite of motion.
A 15-N force and a 30-N force
at on an object in opposite
directions. What is the net force
on the object?
For 20000 points
15 N
When does equilibrium occur?
For 8000 points
When the net forces acting on
the object are zero, or balanced.
A girl whose weight is 400 N
hangs from the middle of a bar
supported by two vertical
strands of rope. What is the
tension in each strand?
For 7000 points
200 N
An object weighs 40 N on earth
and another object weighs 40 N
on the moon. What can you say
about their relative masses?
For 40000 points
The object on the moon has a
greater mass.
What causes acceleration?
For 400 points
A net force greater than zero.
When the mass of an object
increases, what happens to
the acceleration of an object?
For 4000 points
The acceleration decreases.
How are acceleration and net
force on an object related?
For 800 points
The acceleration of an object is
directly proportional to the
magnitude of the net force.
A girl pulls on a 5 kg wagon with
a constant force of 25 N. What
is the wagon’s acceleration?
For 500 points
5
2
m/s
If the force of friction on a
sliding object is 30 N, what is
the force needed to maintain a
constant velocity?
For 100000 points
30 N
If the force acting on a cart
doubles, what happens to the
cart’s acceleration?
For 200 points
It doubles.
Suppose a cart is being moved
by a force. If suddenly a load is
dumped into the cart so that the
cart’s mass doubles, what
happens to the cart’s
acceleration?
For 600 points
It halves.
A player hits a ball with a bat.
The action force is the impact of
the bat against the ball. What is
the reaction to this force?
For 2000 points
The force of the ball against the
bat
A person is attracted towards
the center of Earth by a 500-N
gravitational force. What is the
force with which the Earth is
attracted to the person?
For 4000 points
500 N
What causes resistance?
For 5000 points
internal friction
Two spheres A & B are projected off the edge of
a 2.0 m high table with the same horizontal
velocity. Sphere A has a mass of 10. g and
sphere B has a mass of 5 g. How do their
landing times compare?
For 12000 points
They are the same
Sphere A is projected off the edge of a 1.0 m
high bench with a horizontal velocity of 2.0 m/s.
Sphere B is dropped from the same height as
Sphere A. Both spheres have the same size
and mass. How do their landing times and
velocities compare?
For 3000 points
They are the same.
A truck is moving at constant speed. Inside the
storage compartment, a rock is dropped from the
midpoint of the ceiling and strikes the floor
below. Does it strike the floor behind where it
was dropped, in front of where it was dropped,
or directly below?
For 8000 points
directly below
A diver running at 3.6 m/s dives
out horizontally from the edge of
a 31 m high cliff. How far from
the base of the cliff does the
diver hit the water?
For 6000 points
9m
What happens to the acceleration
of the object when it changes from
the picture on the right to the
picture on the left?
For 30000 points
the acceleration increases
What happens to the acceleration
of the object when it changes from
the picture on the right to the
picture on the left?
For 800 points
It does not change.
How does the average velocity for
objects A and B compare for the
time interval 0 to 5 seconds?
For 8000 points
A=B
How does the instantaneous
velocity for A and B compare at t =
5 s?
For 5000 points
A>B
How does the acceleration of
object A compare to the
acceleration of object B at
t = 5 s?
For 4000 points
Acceleration of B > A
How does the displacement of A
compare to B at t = 5 s?
For 40000 points
A=B
How does the average velocity for
objects A and B compare for the
time interval from 0 to 5 s?
For 20000 points
A=B
How does the instantaneous
velocity of objects A and B compare
at t = 5 s?
For 50000 points
A>B
Draw the velocity vs. time graphs
for the following position vs. time
graphs
For 12000 points