What is the quantity which is measured by the area occupied below the velocity-time graph ?
The area below velocity-time graph gives the distance covered by the object.
Distinguish between speed and velocity.
A bus decreases its speed from $80\, km\, h ^{-1}$ to $60 \,km\, h ^{-1}$ in $5\, s$. Find the acceleration(in $m / s ^{2}$) of the bus.
During an experiment, a signal from a spaceship reached the ground station in five minutes. What was the distance of the spaceship from the ground station? The signal travels at the speed of light, that is, $3 \times 10^{8}\,m\,s^{-1}$.
The speed-time graph for a car is shown is Fig.
$(a)$ Find how far does the car travel in the first $4,sec$. Shade the area on the graph that represents the distance travelled by the car during the period.
$(b)$ Which part of the graph represents uniform motion of the car ?
An artificial satellite is moving in a circular orbit of radius $42250\, km$. Calculate its speed (in $m s ^{-1}$) if it takes $24 $ hours to revolve around the earth.
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