Ch -8 Motion ( Part-2)| Speed,velocity and acceleration | Numericals | Class 9 Physics Motion| NCERT

In case of a uniform circular motion, velocity and acceleration are

A player throwsa a ball upwards with an initial speed of 29.4 ms^(-1) . (i) What is the direction of acceleration during the upwared motion of the ball? (ii) What are the velocity and acceleration of the ball at the highest point of its motion? (iii) Choose the x=0 and t=0 to be the location and time of the ball at its highest point, vertically downward direction to be the positive direction of X-axis, and give the signs of positive, velocity and acceleration of the ball during its upward, and downward motion. (iv) To what height does the ball rise and after how long does the ball return to the player's hand?( Take g =9.8 ms^(-2) , and neglect air resistance).

Which relations are always correct in between the displacement (vecx) velocity (vecv) and acceleration (veca) for a simple harmonic motion ?

The position velocity and acceleration of a particle executing simple harmonic motion are found to have magnitudes 2cm, 1ms^-1 and 10ms^-2 at a certain instant. Find the amplitude and the time period of the motion.

Following are four different relations about displacement, velocity and acceleration for the motion of a particle in general. Choose the incorrect one (s)

Write the expressions for velocity and acceleration of a particle executing simple harınonic motion in terms of its displacement.

The diplacement , velocity and acceleration in a simple harmonic motion are related as the

What is the angle between velocity vector and acceleration vector in unitorm circular motion ?

In case of a projectile motion, what is the angle between the velocity and acceleration at the highest point?

Velocity vector and acceleration vector in a uniform circular motion are related as