(a) Simplify the expression
2
9.8 under the square root sign to
?
(b) Calculate the reaction time if the distance the ruler fell before being caught was
44cm.
(c) Make d the subject of the equation, remembering to use your simplified version of
2
9.8 which you found in part (a).
(d) Use your equation from part (c) to find the distance the ruler should fall before being
caught if t is half the value you found in part (b), i.e. half the time taken to catch the
ruler when it fell 44 cm.
Answers
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32
It is given that 2x92 = 64° and xy ix baroducedto point P. Draw a figure from the giveninformation. If ray yQ lipects ZYP, find XYQand reflex QYP.
ANSWER
X+X+6 Y = 186
2x = 180° - 64
2x = 116
x = 116/2
X = 58°
Ist x = 58°, llnd x = 58°
Reflex QXP
QXP-= 360
58 = 360
= 360° = 58"
302
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