Velocity at Projectile Peak = Zero (Wrong): Only the vertical component $v_y$ reaches zero at the highest point. The horizontal component $v_x = u\cos\theta$ never changes because there is no horizontal force. Speed at the peak = $u\cos\theta$, the minimum speed during the trajectory.

Heavier Objects Fall Faster (Wrong): In free fall (ignoring air resistance), all objects accelerate at $g = 9.8$ m/$s^{2}$ regardless of mass. Galileo established this experimentally. NEET may present a direct comparison question testing this understanding.

Negative Acceleration Always Means Slowing Down (Wrong): Deceleration (slowing down) requires acceleration and velocity to have opposite signs. A body moving in the negative direction with negative acceleration ($a$ in same direction as $v$) is speeding up, not slowing down.

Area Under x-t Graph = Displacement (Wrong): The slope of the x-t graph is velocity; the area under the x-t graph is $[L \cdot T]$, which is not a standard physical quantity. The area under the v-t graph is displacement.

$s_n$ Formula Gives Cumulative Displacement (Wrong): $s_n = u + \frac{a(2n-1)}{2}$ gives displacement only during the nth second. Total displacement after $n$ seconds is $s = un + \frac{1}{2}an^2$.

Range is Maximum at 90° (Wrong): $R = \frac{u^2\sin 2\theta}{g}$ is maximum when $\sin 2\theta = 1$, i.e., $2\theta = 90°$, so $\theta = 45°$. At 90°, $\sin 180° = 0$, giving zero range (vertical throw).

$\sin 2\theta = 2\sin\theta$ (Wrong): The correct identity is $\sin 2\theta = 2\sin\theta\cos\theta$.