Question

In 2011 Aroldis Chapman threw a 105 mi/hr (47 m/s) pitch, the fastest recorded in the major leagues. What was the greatest momentum of the 145 gram baseball?
2.8

4.8

6.8

8.8

Answer 1

Answer:

6.8 Kg m/s

Explanation:

Linear Momentum

The linear momentum is defined as the product of the velocity of an object by its mass

P=mv

It's a vectorial magnitude, but if we use its equivalent scalar equation, then v is the speed

The measured speed of a pitch by Aroldis Chapman is v=47 m/s. The ball has a mass of m=145 gram=0.145 Kg. The maximum momentum of the ball was

P=(0.145 Kg)(47 m/s)=6.8 Kg m/s

The options don't show the units of the momentum, but we assumed to be Kg m/s, so the correct option is the third one