Laws of Motion ...

A cyclist is moving on a circular path with constant speed $$v$$. What is the change in its velocity after it has described an angle of $$30^{o}$$

Choose the incorrect statement

The magnitude of the impulse developed by a mass of $$0.2$$kg which changes its velocity from $$5\hat{i}+3\hat{j}+7\hat{k}$$ m/s to $$2\hat{i}+3\hat{j}+\hat{k}$$

In the state of equilibrium
I) Net force is zero
II) Body at rest will continue to be in its state of rest
III) Body moving with uniform velocity will continue to be in its state of uniform velocity
IV) Body with linear momentum $$\vec{p}$$ will continue to have the same momentum $$\vec{p}$$.

A ball mass 1 kg moving with speed $$10{ ms }^{ -1 }$$ strikers a wall and comes to rest. The impulse of the force on the ball is of magnitude

If force acting on a system is zero. the quantity which remains constant

A uniform rod of mass M has an impulse applied at right angles to one end. If the other end begins to move with speed V, the magnitude of the impulse is

A bod of mass M is suspended by a massless string of length L.The horizontal velocity V at position A is just sufficient to make real the point B.The angle $$\theta$$ at which the speed of the bob is half of that it A satisfies:

A bob is suspended from the ceiling of a car which is accelerating uniformly on a horizontal road
choose the wrong statement

Identical constant forces push two identical cars A and B continuously from a starting line to a finish line. The cars move on a frictionless horizontal surface. If car A is initially at rest and car-B is initially moving right with speed $$Vo.$$ Choose the correct statement