Q. A major-league catcher gloves a 93 mi/h pitch and brings it to rest in 0.14 m. If the force exerted by the catcher is 803 N, what is the mass of the ball?
Q. An object weighing 313 N in air is immersed in water after being tied to a string connected to a balance. The scale now reads 275 N. Immersed in oil, the object weighs 287 N. Calculate the density of the oil.