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Home >All Categories > Science & Mathematics >Mathematics >Open Question Pera K Member since:March 27, 2011Total points:83 (Level 1)A science project studying catapults sent a projectile into the air with an initial velocity of 24.5 m/s. The formula for distance (s) in meters with respect to time in seconds is
s = -4.9t2 + 24.5t.
Find the time that this projectile would appear to have the maximum distance above ground.Answer Question

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) A quadrant of radius a , centred at 0,0 is cut from the above desk in order to create a computer work-station desk, as shown in the diagram below.

Find the mass of the computer work-station desk.

Write down the double integrals that give the co-ordinates of its centre of mass. Note that you are not required to find the centre of mass.

Square desk has co ordinates on (0,0) (2a,0) (0,2a) (2a,2a)

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