A satellite while revolving around the earth completes one revolution in $1$ hour and $30$ minutes. What is the angular speed of the satellite ?
$t=1\, h \,30$ min $=90 m =90 \times 60=5400 s ;$ angle
covered in one revolution $=2 \pi$ radian, $\omega=?$
Applying $\omega=\frac{\theta}{t} ; \omega=\frac{2 \pi}{5400}=\frac{\pi}{2700} rads ^{-1}$
The $v-t$ graph of cars $A$ and $B$ which start from the same place and move along straight road in the same direction, is shown. Calculate
$(i)$ the acceleration of car $A$ between $0$ and $8\, s$.
$(ii)$ the acceleration of car $B$ between $2\, s$ and $4\, s$.
$(iii)$ the points of time at which both the cars have the same velocity.
$(iv)$ which of the two cars is ahead after $8\, s$ and by how much ?
Differentiate between distance and displacement.
Explain with reason, which of the following graphs can possibly represent the motion of a particle observed in nature ?
$(a)$ 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.
Give an example of a body which covers a certain distance, but its displacement is zero