Describe a situation that would create this free body diagram.
To be drawn by Ms. Jocoy
any object being pushed across a surface at CONSTANT Velocity or an object being pushed, but remaining at REST
100
What are the units for speed we see most frequently in this class?
What is m/s
100
What is the value for acceleration due to gravity in Mr. Torch's class?
What is 10 meters per second squared or 9.8 m/s^2
100
Jamil is moving at a constant speed of 20 m/s. How far did he travel in 3 seconds.
What is 60 meters.
100
What does the slope of the line represent on a velocity vs. Time graph?
What is acceleration
200
Explain how parachutes work using air resistance?
What is "Parachutes increase the amount of air resistance by collecting more air (therefore increasing the upward force to counteract the force of gravity)"
200
Speed is a vector quantity. True or False
What is False (Speed is a scalar quantity) Velocity is the vector
200
Without air resistance present, which will hit the ground first (if dropped from the same height), a coin or a feather?
What is a both. If there is no air resistance, the only force and acceleration is due to gravity
200
Jill dropped a penny (from rest) off a cliff. How far did the penny fall in 3 seconds (neglect air resistance)?
What is 45 meters (use equation d = 1/2*gt^2)
200
How do you find velocity from a distance time (x-t) graph?
Find the slope V=x/t
300
What are the two words in a word problem that signal that the SPEED IS ZERO?
What is "dropped" or "at rest"
300
State the equation of acceleration using the following variables (final velocity, initial velocity, time)
What is Final Velocity - Initial Velocity All divided by Time
300
Gravity is only present on the earth and is not a universal law. True or false?
What is false
Universal Gravitation = Gm1*m2/r^2
300
If Tyler drove a total distance to school in his car of 60 miles and it took him 1 hour to drive to school, what is his average speed? (in miles per hour)
What is 60 miles per hour
300
What does the slope of the line represent on a Distance Vs. Time Graph?
What is velocity
400
A large student pushes on a tiny student (mean!) The tiny student goes flying. Which student felt a larger force and why?
The same! Newton's second law, there are equal and opposite forces.
400
What are the units for acceleration most frequently used in this class?
What is meters per second squared m/s^2
400
Draw a picture of the moon orbiting the Earth. Draw in the vectors for: velocity, acceleration, force.
Force and acceleration point towards the center (earth) Velocity is drawn tangent (along) the circle
400
What is the square root of 169?
What is 13
400
On a Distance Vs. Time graph draw a line that represents changing velocity?
What is "draw any line that is not straight (curved)"
500
Can an object that is moving experience no net force? Explain.
Yes! Asteroids in space, when all the force arrows cancel out. A book being pushed at constant velocity
500
If Mr. Aquino (because Ms. Jocoy would never be this reckless) is driving his car at 70 m/s and his velocity goes down to 30 m/s in 4 seconds, what is his acceleration?
What is - 10 meters per second squared
500
What happens to the force of gravity if you double the radius between the two objects?
The gravity is 1/4 of it's initial value
500
Steve (Ms. Jocoy's uncle) threw a ball straight up into the air with an initial velocity of 20 m/s. What is the ball's velocity 2 seconds later, at the top of the throw?
What is 0 m/s.
*Remember at maximum height, your velocity in the y direction is ZERO
500
On a Speed Vs. Time Graph draw a line that represents constant constant acceleration.