A red ball slides off a table as shown in the animation (position is in meters and
time is in seconds). Ignore air friction. The ball hits the other
table after moving a distance x. (Remember to click and drag to find x and y.)
Start
(Hint: Review Ch. 3 )
Question 1
What is Vx just before the collision ? To find this quantity, please
measure the ball's change in x four times and take the average of
the four measurements. Assume the measurements are in meters and are
precise to the 1/100 place. Fill in the table below with the
measurements
first x | second x | difference |
average difference |
||
Vx = ____________________________
Question 2
What is Vy just before the collision ? Assume g = 9.80 m/s2
( 3 sig.fig.)
Question 3
What is the speed just before the collision? Use the Pythagorean
Theorem.
Question 4
What is the magnitude of the angle that the velocity vector makes with the horizontal
just before the collision? Use trigonometry.
Reference
See Ch. 3