What happens to a baseball that is fired downward through air at twice its terminal speed does it speed up, slow down, or continue to move with its initial speed?.

when an electron moves through a magnetic field , its speed will

The de-Broglie wavelength of a bus moving with speed v is lambda . Some passengers left the bus at a stopage. Now, when the bus moves with twice its initial speed, its kinetic energy is found to be twice its initial value. What will be the de-Broglie wavelength, now?

Two drops of same radius are falling through air with steady speed v. If the two drops coalesce, what would be the terminal speed –

Eight spherical rain drops of the same mass and radius are falling down with a terminal speed of 6cms^(-1) . If they coalesce to form one big drop, what will be its terminal speed? Neglect the buoyancy due to air

When an object is moving with a unifrom speed, its average speed is equal to its speed

A ball is thrown upwards into air with a speed greater than its terminal speed. It lands at the same place from where it was thrown. Mark the correct statement (s).

A body of mass 2 kg moving with a speed of 4 m/s. makes an elastic collision with another body at rest and continues to move in the original direction but with one fourth of its initial speed. The speed of the two body centre of mass is (x)/(10) m/s. Then the value of x is _____________

A projectile is fired horizontally with an initial speed of 20 m/s/ its horzontal speed 3 sec later is: