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All other properties of the different states of matter holds except that the molecules of solids don't move freely due to the fact that the particles in the solids are closely packed so it inhibits free motion.

The body while coming down is acted upon by acceleration due to gravity, hence, the vertical force is constant. Also, at maximum height, the vertical velocity is 0 and then increases as the body comes downward.

Resolving 100N into horizontal and vertical 100 sin45 = 0.7071 * 100 = 70.71 100cos45 = 70.71 Vertical forces = 100 - 70.71 → 29.29 Horizontal force = 70.71 + 60 → 130.71 Resultant of vertical and horizontal forces using pythagoras thoerem Resultant force (F) = m * a a = F/m → 133.9/10 a = 13.4

Upthrust = weight of liquid displaced = mass of liquid displaced \(\times\) acceleration due to gravity = \(\frac{200}{1000} \times 10\) = 2N

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

It is a type of beam balance with great precision, and it can pick up the slightest mass placed on it.

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

Convert velocity from \(kmh^{-1}\) to \(ms^{-1}\), by multiplying \(\frac{1000}{3600}\), \(72 \times \frac{1000}{3600}\) = \(20ms^{-1}\) Therefore, distance covered in 0.4s = \(20 \times 0.4 = 8m\)

The formula is \(\frac{v^{2}sin2\theta}{g}\) And the sine graph is highest at 1 with its inverse as 90^\circ. Hence, \(2\theta\) = 90^\circ \(\theta\) = 45^\circ

Relative motion is the calculation of the motion of an object with regard to some other moving object. Hence, relative motion is not a type of motion.

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

The spring constant = the measure of stiffness = 2000\(Nm^{-1}\) Energy stored in a spring = Work done to stretch it through a distance = change in potential energy = \(\frac{kx^{2}}{2}\) = \(\frac{2000 \times (0.04)^{2}}{2}\) (converting 4cm to metres) = \(\frac{3.2}{2} = 1.60J\)

The quantity of heat needed to melt ice = mL (where m is the mass of ice and L is the specific latent heat of fusion of ice) Q = \(50 \times 336 = 16800J\) but this is 70% of the total heat supplied so that we have, 70% total heat = 16800J \(\frac{70}{100}\) of total heat = 16800J ⇒ Total heat supplied = \(\frac{16800\times100}{70} = 24000J\)

Velocity ratio = \(\frac{Effort distance}{Load distance}\) On an inclined plane, it is the inverse of \(sin\theta\) = \(\frac{1}{sin\theta}\)

When a bubble is deep under water, it has both atmospheric pressure and water pressure (giving it depth), acting on it but as it rises, the water pressure decreases. At this point, the basic pressre acting on the bubble is the atmospheric pressure. Recall that pressure is inversely proportional to volume (Boyles' law), hence, the less the pressure, the more the volume.