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