1D Motion
How much time would it take you to bike 1500 m going 6 m/s?
250 seconds
If you travel 80 m North, 45 m East, and then -50 m North, what is the distance travelled?
175m
acted on by an UNBALANCED force.
How much kinetic energy does a 250kg rollercoaster going 20 m/s have?
50000 J
If the current is flowing out of the page what direction would the Magnetic Field be flowing?
Counterclockwise
If you travel 75 m North and then 25 m South, What is your distance and displacement?
Distance: 100 m
Displacement: 50 m North
If you travel 80 m North, 45 m East, and then -50 m North, what is the displacement? (honors: and angle?)
54.1 m, (honors: 34 deg)
You are pulling your friend on a wagon at a constant velocity, Draw the FBD.
Fg (down), Fn (up), Fa (forward), and Ff (backwards) all balanced.
How high of a hill can a 250kg rollercoaster going 20 m/s go up? (closed system)
20.41 m
A straight wire carrying a current to the right of the page and placed in a magnetic field that is directed into the page. What direction would the Force be?
upwards
What does a horizontal flat line on a position-time graph mean?
Stopped
How much time does it take to fall off of a 176 m cliff?
6 seconds
A 80kg skydiver speeding up at a rate of 3 m/s2 on the fall down. Draw the FBD and determine the Force of air resistance acting on them.
FBD: Fg is bigger that Fair.
Fair = 544 N
A 250kg rollercoaster going 20 m/s has to go up a 40 m tall hill. How much work is needed to be added by the motors to get the coaster over the hill?
48,000 J
A 12 V battery is connected in series to a 3Ω resistor and a resistor that has an unknown resistance. The total current in the circuit is 3 A.
Draw the Circuit Diagram and Create the VIRP Chart
Resistor 1: V = 9, I=3, R=3, P=27
Resistor 2: V = 3, I=3, R=1, P=9
Total: V=12, I=3, R=4, P=24
What does a vertical flat line on a position-time graph mean?
That would be impossible since time is always moving on.
Draw a trajectory of something falling off a cliff
curved line
A 60kg softball player going 5 m/s slides for 3 m to home base. Draw the FBD and determine the Force of friction acting on them
FBD: Fg=FN , Ff pointing backwards, NO FA
Ff = 250 N
If the motors on a rollercoaster exert 3 kW of power, how long would they need to run to add 72000 J of work?
24 seconds
An 8Ω resistor, and a resistor with an unknown resistance are connected in parallel across a 24 V battery. The total power consumed by the circuit is 288 W.
Draw the Circuit Diagram and Create the VIRP Chart
Resistor 1: V = 24, I=3, R=8, P=27
Resistor 2: V = 24, I=9, R=2.67, P=9
Total: V=24, I=12, R=2, P=288