An artificial satellite is moving in a circular orbit of radius nearly $42.250 \,km .$ Calculate its linear velocity, if it takes $24$ hour to revolve round the earth.
In your everyday life, you come across a range of motions in which
$(a)$ acceleration is in the direction of motion.
$(b)$ acceleration is against the direction of motion.
$(c)$ acceleration is uniform.
$(d)$ acceleration is non$-$uniform.
Can you identify one example each of the above type of motion ?
Under what condition will the magnitude of the displacement be equal to the distance travelled by an object ?
$(a)$ When will you say a body is in
$(i)$ uniform motion $(ii)$ non$-$uniform motion ?
$(b)$ Show the path of an object when it is in uniform motion with the help of a graph.
A body can have zero average velocity but not zero average speed. Justify.