A body is thrown upward against the gravity ‘g’ with initial velocity ‘u’. Which one among the following is the correct expression for its final velocity when the body attains the maximum height?
The final velocity for a body thrown upwards is always 0. However, the maximum height attained by the body can be given by the expression u2/2g derived from the formula v2 - u2 = 2gs, where u is the initial velocity, v is the final velocity and s is the height attained
If the ratio of the weight of a man in a stationary lift and when it is moving downwards with uniform acceleration ‘a’ is 3 : 2, then the value of ‘a’ is
The current produced by upwelling of cold water off the coast of Chile and Peru is known as
A one-rupee coin is placed at the bottom of a vessel. Water is then poured into the vessel such that the depth of water becomes 20 cm. If water has refractive index 4/3, the coin would be seen at a depth of
The spread in colours in a rainbow on sky is primarily due to
Gravitational force shares a common feature with electromagnetic force. In both cases, the force is