Question

A baseball has a mass of about 155 g. What is the magnitude of the momentum of a baseball thrown ata speed of99miles per hour? (Note that you need to convert mass to kilograms and speed tometers/second. A mile is 1.6 kilometers or 1600 meters.)=6.866.82kg·m/s

Answer 1

To solve this problem we will apply the concept related to momentum, which is a physical quantity derived from a vector type that describes the movement of a body in any mechanical theory. In classical mechanics, the amount of movement is defined as the product of body mass and its velocity at a given time. Mathematically is written as,

$P = mV$

Here,

m = Mass

V = Velocity

Our values are

$m = 155g = 155*10^{-3}kg$

$V = 99miles/h (\frac{1.6km}{1mile})(\frac{1h}{3600s})$

$V = 44.256m/s$

Replacing,

$P = (155*10^{-3})(44.256)$

$P = 6.859kg\cdot m/s$

Therefore the magnitude of the momentum of a baseball thrown at a speed of 99miles per hour $6.859kg\cdot m/s$