Question

a professional baseball player can pitch a baseball with a velocity of 44.7m/s towards home plate. If a baseball weighs 1.4 N, how much momentum does it have when it hits the catcher units

Answer 1

Answer:

p = 6.25 kg-m/s

Explanation:

It is given that,

Velocity of the baseball, v = 44.7 m/s

Weight of the baseball, W = 1.4 N

Firstly we need to find the mass of the baseball. It can be calculated as :

$m=\dfrac{W}{g}$

$m=\dfrac{1.4\ N}{9.8\ m/s^2}$

m = 0.14 kg

The momentum of an object is equal to the product of mass and velocity. It is given by :

$p=m\times v$

$p=0.14\ kg\times 44.7\ m/s$

p = 6.25 kg-m/s

So, the momentum it have when it hits the catcher is 6.25 kg-m/s. Hence, this is the required solution.

Answer 2

1.4 N is a weight so calculating it's mass
1.4/9.8 = 0.1428 kg
momentum will be 0.1428*44.7 = 6.38 kgm/s