NDA || Physics || Mechanics || _Quiz_2020

The formula of the maximum height of the projectile is?

Two particles P and Q are moving on a circle. At a certain instant of time both the particles are diametrically opposite and P has tangential acceleration 8 m/s² and centripetal acceleration 5 m/s² whereas Q has only centripetal acceleration of 1 m/s². At that instant acceleration (in m/s²) of P with respect to Q is:

A ball is thrown upward with an initial velocity V₀ from the surface of the earth. The motion of the hail is affected by a drag force equal to mγυ² (where m is mass of the hail, u is its instantaneous velocity and γ is a constant). Time taken by the ball to rise to its zenith is:

A particle is moving with speed along positive 𝒳 –axis. Calculate the speed of the particle at time t = (assume that the particle is at origin at t = 0).

A scooter going to the east at 10 m/s turns right through an angle of 90⁰. If the speed of the scooter remains unchanged in taking the turn, the change in the velocity of the scooter is