Thread: Helmet v Mask
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Old Fri Jul 15, 2005, 07:37am
mbyron mbyron is offline
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Re: Re: Re: Re: Well,

Quote:
Originally posted by GarthB
No. Accelerate does not mean "to go faster." If car A is going 30mph and car B is going 60mph, car B is going faster but it is not necessarily accelerating.

Accelerate means to increase in velocity over a period time. What Bob said is correct. The measurement of 14 ft per second per second Is a meaure of acceleration. Bob did not say a foul ball accelerates, he just noted the proper use of a term.
Almost right. Acceleration is change in velocity over time, and the "distance per second per second" units are correct measures of acceleration.

In fact, then, every pitch accelerates in two ways as it travels from pitcher to catcher. In slowing down, it decelerates; and in curving due to the force of gravity, it experiences centripetal acceleration.

Glad to help get that straight, for whatever it's worth. No, no, don't thank me...
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mb
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