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E = pt => 60 x 1 x 60 x 60 = 216000J

No expanded working has been attached for this question yet. The verified answer is Option C.

No expanded working has been attached for this question yet. The verified answer is Option D.

Quantities unit Force Newton Torque Newton-metre Power Watt Momentum Kilogram-metre per secs

COS 30o = \(\frac{F_1}{100}\) F1 = 86.6N

No expanded working has been attached for this question yet. The verified answer is Option D.

F = \(\frac{m(v - u)}{T}\) 30 = \(\frac{0.075(v - 0)}{0.05}\) v = 20ms-1

power = mgh 0.25 x 103 = \(\frac {60 \times 10 \times 22}{t}\) t = 52.8 sec

\(\mu\)mg = ma \(\mu\)mg = F - ma \(\mu\) x 10 x 10 = 10 - (10 x 0.2) 100 \(\mu\) =10 - 2 dividing both sides by 100 \(\mu\) = 8 / 100 \(\mu\) = 0.08

since the object floats, density of liquid = density of object converting 500cm3 to m3, \(\frac{500}{10^{6}} = 5 \times 10^{-4}m^{3}\) D = \(\frac{m}{v}\) = \(\frac{2}{5 \times 10^{-4}}\) =\(4.0 \times 10^{3}kgm^{-3}\)

PV = \(\frac{N}{m^2}\) x \(\frac{m^3}{1}\) = Nm = Force x distance = work done = energy

Temperature affects the speed of sound in the air. As temperature increases, the speed of sound increases. The speed of sound is independent of pressure, i.e., it remains unchanged by the increase or decrease of pressure. Frequency does not affect the speed of sound; it only affects the pitch of the sound.

Energy(kWhr) = 200 x 10\(^{-3}\) x 20 x 24 = 96kwhr 1 kwhr cost 5 kobo; 96 kwhr will cost 5 x 96 = 480 kobo = N4.80

If a train and a lorry travel the same distance in the same time interval, then: \(\text{Average speed}\) = \(\frac{\text{Total distance}}{\text{Total time}}\) Since both distance and time are the same for both vehicles, their average speeds must be equal. - average velocity — This would only be true if they are moving in the same straight line direction. The question does not specify direction.

At constant velocity, an object must have a constant speed in a constant direction. Constant direction constrains the object to motion in a straight path thus, a constant velocity means motion in a straight line at a constant speed.