In the above example, the height ascended or descended, as the case may be, during that time i.e. 4 sec will be -

In the above example, the velocity after 2 sec will be - (in m/sec)

A person ascends vertically from the earth's surface to a height which is the same as the earth's radius. Then he descends to the centre of the earth. What will be the weight of the person with respect to his weight on the earth's surface in each case ?

A lift ascends with a constant acceleration of 4 m s^(-2) then with a constant velocity v and finally stops under a constant retardation of 4 m s^(-2) . If the total height ascended be 20 m and the total time taken is 6 s then the time during which the lift was movitng with a vclocity nu is

Two bodies of masses 11kg and 11.5kg are connected by a long light string passing over a smooth pulley Calculate velocity and height ascended/descended by each body at the end of 4s .

What other errors can you find while measuring the length of line segment ? For example, to find the length of a pencil, the eye should be correctly positioned as shown in the figure i.e. just verticially above the mark for both points. Other wise there may be an error due to angular viewing.

Express the quantities in above with or without exponents as the case may be . 0.00461 .

The current in a wire varies with time according to the equation I = 4 + 2t where I is in ampere and t is in sec. Calculate the quantity of charge which has passed through a cross-section of the wire during the time t = 2 sec. To t = 6 sec.

Choose the correct word from the brackets to complete the following sentences. Anions are discharged at the anode during electrolysis. The tendency of the anions to get [reduced / oxidised ] at the anode increases on (ascending / descending] the electrochemical series.