SPRING 2005

HOMOKINETICS II

PRACTICE PROBLEMS I

1. A basketball goal weighing 240 N has dimensions of 400 cm by 50 cm. How much pressure is exerted by the basketball goal against the floor?
2. What is the volume of a box with sides of 0.3 cm, 4.4 cm, and 3.2 cm?
3. If the contents of the box in problem # 2 weighs 50 N, what is the density and specific weight of the box and contents?
4. One batter contacts the ball with little trunk rotation. The distance from the contact point on the bat to the axis for this batter is 30.38 cm. A second batter contacts the ball with full trunk rotation. The distance from the contact point on the bat to the axis for the second batter is 38.6 cm. Each bat weighs 11.15 N. Determine the torque for each batter.
5. Calculate the mass of the following objects:

1. 10 lb shot
2. 165 lb gymnasts
3. 847 N basketball player

6. If a swimmer is traveling at 222.51 m/s and gets touched out by .001 sec. How much distance does he/she lose the race by?
7. Determine the velocity for each athlete:

1. 100 meter sprint in 9.8 sec
2. Swimming 150 feet in 21 sec
3. Falling 43.89 meters in 3 sec
4. A baseball hit 250 feet in 3 sec