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January 27, 2015

January 27, 2015

Posted by **noah** on Thursday, June 23, 2011 at 1:33am.

- physics -
**drwls**, Thursday, June 23, 2011 at 2:40am4 m/s is a very slow pitch. It is only 8.95 mph. A ball thrown at that speed would not make it to the batter's box without rolling there.

Are you sure you copied the problem correctly? A good pitcher throws fast balls over 90 mph.

Average speed while throwing = 2 m/s.

Time = Distance/(Avg speed) = 3.5m/(2 m/s)

= 1.75 s.

Final speed divided by that time is the acceleration.

- physic -
**noah**, Thursday, June 23, 2011 at 5:30amya

its 41 speed

nvm

thx ya^^

- physic -
**drwls**, Thursday, June 23, 2011 at 6:13amRepeat the calculations indicated but starting with V = 41 m/s, not 4 m/s.

The average speed during the throw is

20.5 m/s. The time spent throwing is

T = 3.5/20.5 = 0.1707 s

The acceleration of the ball during the throw is (41 m/s)/(0.1707s)= 240 m/s^2

- physic -
**Pat**, Tuesday, October 11, 2011 at 9:34pmHow do you find the average speed?

- physic -
**rose**, Sunday, January 29, 2012 at 3:54pmits your first speed divided by 2

- physic -
**Georeg**, Friday, September 7, 2012 at 3:25pmWhy divide it by two??

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