I have no diagram, but I'll assume he just shot it straight ahead, and we can assume it fell 2.8 ft. So, how long did it take to hit the floor?
16t^2 = 2.8
t = 0.418 seconds
So, since it traveled 12.75 ft, its speed was
12.75ft/0.418s * 1mi/5280ft * 3600s/hr = 20.8 mi/hr
If it landed 12.75 ft from where it left the table, then you need to add in the length of the table, which you have not given.
the speed at the ground components 30.5 horizontal ft/s and vertical 32*0.418=13.376 ft/s
so, the speed is 33.3 ft/s
The top of the pool table is 2.80 ft from the floor. The placement of the tape is such that 0 feet aligns to the edge of the table (as shown). The winner of the competition wants to know if he has broken the world record for the break shot of 32 mph. His ball landed a distance 12.75 ft from the table edge. Calculate his break shot speed in miles per hour and calculate at what speed did the pool ball hit the ground.
1 answer
1 answer