Question No: 5 The horizontal distance x and the vertical height y of a projectile at a time t are given by x = at and y = bt? + ct where a, b and c are constants. What is the magnitude of the velocity of the projectile 1 second after it is fired? O [a? + (2b + c)212 O [ 202 + (b + c) 112 O [ 2a2 + (2b + c)-112 O [ a2 + (b + 2c)-112
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