If a pitcher throws a 120 m/s fastball how much force does he need to apply if he is in contact with the ball for 1.5 seconds

Force on the fast ball is given as

here m = mass of the ball

Explanation:

As we know that initially fast ball is moving with speed 120 m/s

now after force applied to the ball it comes to rest

So final speed of the ball is ZERO

now time interval of applied force is

t = 1.5 s

now we have

Now as per Newton's II law we know

here m = mass of the ball

hello, i am papaguy.

i have found an answer to your question but use it as information.

information: because weak acids/bases have low concentration of hydrogen ions, the addition of water has a large impact on the ph. 2. a difference in 1 unit is a 10x difference in concentration for example; a liquid with ph of 3 is 10x more acidic than a liquid with a ph of 4. therefore, a liquid with a ph of 3 is stronger.

best of luck!

so easy. just google the electromagnetic waves and it’ll pop up.