A baseball has a mass of and is pitched horizontally at
PHYSICS · Multi-part · CBSE · Physics · Work and Energy · Work and Energy
Problem
A baseball has a mass of 5.00oz and is pitched horizontally at 92mi h−1. [Use 1oz=28.35g and 1mi=1609m.]
(a) Convert the given mass and speed into SI units.
(b) Calculate the kinetic energy of the baseball, giving the result correct to three significant figures.
(c) A second baseball is thrown so that its kinetic energy is exactly the same as that found in part (b) but its speed is 40.0m s−1. Find the mass of this second baseball in grams.