Tut’s body was buried along with gilded treasures.

Give reasons for the following. (i) King Tut’s body has been subjected to repeated scrutiny.

A small body is projected with a velocity of 20.5 ms^(-1) along rough horizontal surface. The coefficient of friction (mu) between the body and surface changes with time t (in s) as the the body moves along the surface. Find the velocity at the end of 4s in m/s

A small body is projected with a velocity of 20.5 ms^(-1) along rough horizontal surface. The coefficient of friction (mu) between the body and surface changes with time t (in s) as the the body moves along the surface. Find the velocity at the end of 4s in m/s

(A): No work is done by the centripetal force acting on a body moving along the circumference of a circle (R) : At any instant, the motion of the body is along the tangent to the circle whereas the centripetal force is along the radius vector towards the centre of the circle