At the highest point of projectile motion, what is the angle between the velocity and acceleration of the projectile motion?

Write the phase difference between the velocity and acceleration of a particle undergoing a simple harmonic motion.

A simple harmonic motion has an amplitude of A and an angular frequency of omega . Determine the distance of the point from the equilibrium position where the magnitudes of velocity and acceleration of the motion are equal.

The displacement equation of a simple harmonic motion is x=Asin(omegat+phi) . Show that the relation between velocity v and acceleration a of the motion is omega^(2)v^(2)+a^(2)=omega^(4)A^(2) .

What is the difference between the electrical effects of point charge at rest and in motion.

Show that for a projectile the angle between the velocity and the x-axis as a function of time is given by theta(t)=tan^(-1)((u_y-"gt")/(u_x))