Question

A block accelerates down a slope,as shown in the figure. The upper portion of the slope is smooth and the lower portion is rough . On the lower portion,
a) the speed of the block may increase, decrease or remain same.
b) the acceleration of block reduces
c) the mass of block reduces
WHICH OF THE FOLLOWING IS/ARE CRRECT?
a) (a) only
b) (a) and (b) only
c) (b) and (c) only
d) (a) ,(b) and (c)

Answer 1

HERE IS UR ANSWER USER ......✌

SORRY TO SAY BUT UR OPTIONS ARE WRONG.THE RIGHT ANSWER IS THAT THE BLOCK WILL ACCELERATE WHILE COMING DOWNWARDS AS THE UPPER SURFACE IN CONTACT IS SMOOTH....

HOPE IT HELPS UUUI.....✌

Answer 2

Answer: b) (a) and (b) only

Explanation: