If the motion of an object is described by `x = f(t)`. Write formula for instantaneous velocity and acceleration.

If the motion of an object is described by x=f(t) write formulae for instantenous velocity and acceleration.

A particle moves with uniform speed in a circular path, the angle between instantaneous velocity and acceleration is

Write the formula for radius R% of a nucleus X.

What is acceleration. Write its formula. Write its unit. Explain positive, negative and zero acceleration.

The displacement s of a particle at time t is given by s = t^3 -4 t^2 -5t. Find the velocity and acceleration at t=2 sec

To enable a particle to describe a circular path, what should be the angle between its velocity and acceleration?

If the position vector of a body performing rectilinear motion is given by vecr = 3t^2hati + 4t^2hatj m. Find the velocity and acceleration of the particle at t= 1sec.

Answer the following questions: Write the formula for the escape velocity.

If v_x , and v_y , are the magnitudes of component of instantaneous velocity along X and Y axes, then

A body is projected horizontally from a point above the ground. The motion of the body is described by the equations x= 2t and y=5t^2 , where x and y are the horizontal and vertical displacements (in m) respectively at time t. The trajectory of the body is