Activity 16: Impulse Momentum & Collisions March 13, 2008 What's Your Intuition? Your house is on fire and smoke is pouring into your partially open bedroom door. The room is so messy that you cannot get to the door. The only way to close the door is
Activity 17: Rotational Motion 3/25/08 Part A When describing circular motion, rotational variables , , and are used. They are the angular equivalent to x, v, and a. We discussed the rotational variables and the relationships between them and the l
Example: 2 Objects Moving The thing to remember here is that this is just two separate problems ON THE SAME coordinate axis. The positions are relative to each other. Each object will have its own equations, but some variables will be the same for bo
Motion Diagrams
Motion to the RIGHT Object speeding up Velocity = + Acceleration = + Object with constant velocity velocity = + acceleration = 0
Object slowing down velocity = + acceleration = -
vo=0 vo vo
Motion to the LEFT Object speeding up
A. Forces 1. Weight (force due to gravity always points directly downwards) 2. Tension (force due to a string always points away from object) 3. Normal (force on the object due to a surface always points from the surface towards the object) 4. Fri
Equation sheet for Test 1 Be sure to show ALL your work. If you do not have work to support your answer, then you will not receive credit. All answers must include UNITS. Equations:
sin " = opp hyp cos" = adj hyp tan " = opp adj
a2 + b2 = c 2
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Activity 15: Momentum and Collisions March 11, 2008 A soccer ball with mass 0.420 kg is traveling with a speed of 4.50 m/s at an angle of 20.0 counterclockwise from the +x-axis. a. what is the ball's x- and y-components of momentum?
Energy Change Du
Activity 14: Energy Diagrams March 6, 2008
A particle moves along the x-axis while acted on by a single conservative force parallel to the x-axis. The force corresponds to the potential-energy function graphed in the figure above. The particle is re
Activity 13: Conservation of Energy and Work by non-conservative Forces March 4, 2008 A small toy skydiver, weighing 50N, sinks 1.5 m into the snow when its parachute does not open. The magnitude of the average force of the snow on the person while i
Activity 12 Work part 2 February 28, 2008 A child applies a force F to a 10 kg sled moving on the frozen surface of a small pond. The force as a function of position is shown below. F(N) 10
x(m) 8 -6 Calculate the work done by the force when the sle
Activity 11 Work February 26, 2008 Use g = 10 m/s2 and ROUND answers. 1. a. Determine the work done by the cable with a 12-N tension while pulling the 2.0 kg crate 4.0 m up the 37 incline. (length of the ramp is 4.0 m).
b. Determine the work done by
Activity 10: Circular Motion February 21, 2008 For each simulation below, determine the direction of the acceleration of the mass m, construct a FBD for m, and apply the radial component form of Newton's 2nd Law for m. mv 2 v2 Frad = marad Frad = (a
Activity 9 FBD Newton's Laws - Friction 2/19/07
M1 = 1 kg
Coefficient of kinetic friction between M1 and the surface is 0.20. The pulley is massless and frictionless. Use g = 10 m/s2.
1. Find the accelerations of the blocks. What is the tension in