10/28/08
Post date: Oct 27, 2008 7:39:50 PM
Bell Activity: What factors determine how long a falling object takes to hit the ground?
Objects launched at an angle
Finding vertical and horizontal components of velocity
Same method as finding components of a force
Draw a triangle with the velocity at the hypotenuse and the x velocity and y velocity as the two legs.
Use sine and cosine to solve for the x velocity and y velocity.
Applying to equations
Same as before, but now we have an initial velocity in both x and y
Means we may have to use the quadratic equation
Example problems
Projectile Activity - find the initial velocity of a projectile after measuring the range, launch angle, and flight time. Due Thursday
Pages 136-139 : Practice problems 1-8 due Thursday, 10/30