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or s SUVAT Equations of motion Suvat equations a = ( v - u ) t s = ( u + v ) t 2 s = u t + 1 a t 2 2 v 2 = u 2 + 2 a s

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or s SUVAT Equations of motion Suvat equations a = ( v - u ) t s = ( u + v ) t 2 s = u t + 1 a t 2 2 v 2 = u 2 + 2 a s

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or s SUVAT Equations of motion Suvat equations a = ( v - u ) t s = ( u + v ) t 2 s = u t + 1 a t 2 2 v 2 = u 2 + 2 a s

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or s SUVAT Equations of motion Suvat equations a = ( v - u ) t s = ( u + v ) t 2 s = u t + 1 a t 2 2 v 2 = u 2 + 2 a s

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or s SUVAT Equations of motion Suvat equations a = ( v - u ) t s = ( u + v ) t 2 s = u t + 1 a t 2 2 v 2 = u 2 + 2 a s

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USING THE EQUATIONS OF MOTION 1. Write down the symbols of the quantities that you know 2. Write down the symbol of the quantity that you require 3. Select the equation that contains all of the symbols in 1. and 2. above e.g. A stone is released from a height of 20 m above the ground. Neglecting air resistance and using the acceleration due to gravity as 9.81 ms -2, find the velocity with which the stone will hit the ground. This must be equation 2 as it is the only one with “v”, “u”, “a” and “s” in it v 2 = u 2 + 2as v 2 = 0 2 + 2 x 9.81 x 20 v = 392 = 19.8 m s -1 u= 0 from rest s= 20 m a= 9.81 ms -2 v= ?

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1. 2 FREELY FALLING OBJECTS - we will consider the case where objects move in a gravity field – namely free-fall motion. We will neglect [for a time]

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