C3: VELOCITY AND ACCELERATION Example 17 : An object is projected with an initial velocity of 20 ms and at angle of 30° to
the horizontal. Assuming that the acceleration due to gravity is 9.81 ms, find the
a) maximum height reached.

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The text compares alternating current with direct current. how are they different? a alternating current reverses direction in the electrical wiring. direct current flows in one direction only. b direct current reverses direction in the electrical wiring. alternating current flows in one direction only. c direct current is powered by solar energy. alternating current is powered by electrical energy. d alternating current does not move in the electrical wiring. direct current does move in the electrical wiring.

Human population projections are subject to change due to fluctuations in global fertility and mortality rates