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5 answers

The fundamental equations are

a = v / t

where
a is acceleration
v is velocity
t is time

AND

d = 1/2 a*t*t

where d is distance

The third thing you need to know is that for an object falling on earth, the acceleration is 9.8 meters per second per second.

2006-07-24 06:43:32 · answer #1 · answered by Keith P 7 · 0 0

Speed follows the simple equation
distance=rate x time here rate is the speed. So we can rearange this equation and solve for the speed/rate.

rate=distance/time

Acceleration is a little different. It is the change in the speed per unit of time. Therefore a negative accleration means the object is slowing down, where a positive acceleration means the object is speeding up. Imagine a dragster on a 1/4 mile strip. Many of the top fuel cars go from 0 to over 400 MPH in this distance. The car then deaccelerates from 400 MPH to 0 and comes to a complete stop.

In terms of physics the equation that involves acceleration is
force =mass x acceleration.

The simplest explaination for acceleration I can think of is the change in speed per unit of time. A car traveling at steady speed of the 30 MPH has an acceleration of 0. Yet if this same car speeds up to 60 MPH, it has a positive acceleration until the speed of 60 MPH is reached. Hope this helps.

2006-07-24 06:50:05 · answer #2 · answered by don1n8 4 · 0 0

Let T be the tension in the elevator hanger, M its mass, g is the gravitational acceleration, a the elevator acceleration, using Newton's second law :
T - M * g = M * a
regarding unints and the sign of a

2006-07-24 06:40:52 · answer #3 · answered by a_ebnlhaitham 6 · 0 0

I hate operating in pounds. next you ought to be wanting acceleration in ft/s/s ! i easily am feeling dumb correct right here. Its an hardship-free problem yet i will in common words artwork it out in SI. Sorry. Mass 100 fifteen lb = 52.18 kg which has a gravity stress on it of 511.3 N reaction stress 119 lb = SI stress of 529.a million N stress from the elevator ( 529.a million) = help stress (511.3) + accelerating stress So the accelerating stress is 529.a million – 511.3 = 17.8 N This stress is utilized to a mass of 50 2.18 kg and ought to favor to furnish an acceleration of 17.8 / 52.18 = 0.34 m/s/s it extremely is an positive effect - it substances the range of time between flooring that we actual adventure. and that i have were given purely realised a thanks to do the calculation in Imperial instruments yet i'd require to remodel stress into poundals - do you though have them? in case you take advantage of this technique - replacing pounds into Newtons skill (a million) divide the pounds by 2.2, then (2) multiply by 9.8 Then its without put off ahead. ( and making use of SI instruments makes it look better "medical" ) EDIT - Bob ok's is large - thoroughly receives around the unit problem ( and instruments shouldn't in any appreciate be a difficulty). Makes me very jealous. ;-)

2016-10-15 03:53:05 · answer #4 · answered by ? 4 · 0 0

Need data question does not compute. OR

Please elaborate. Not enough info to reply.

2006-07-24 06:37:46 · answer #5 · answered by Don't look too close! 4 · 0 0

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