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 ((1.6km)/(1mile))((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`