Download Motion Test

Motion Test
1. What does the odometer of an automobiles measure? Under what condition is the
magnitude of average velocity of an object equal to its average speed? (3)
2. (a) What is the quantity which is measured by the area occupied below the velocity time
graph?
(b) A train starting from rest attains a velocity of 72 km/h in 5 minutes. Assuming that the
acceleration is uniform, find out the
(i) acceleration
(ii) the distance travelled by the train for attending this velocity?
3.Plot a velocity–time graph for the same. A girl walks along a straight path to drop a letter in
the letterbox and comes back to her initial position. Her displacement–time graph is shown in
Fig.8.4.
(5)
(3)
Plot a velocity–time graph for the same.
4.What happens when we accidentally step on a peel of banana? Explain with reference to
Newton’s law of motion.
5. Identify the kind of motion in the following cases:
(i) A car moving with constant speed turning around a curve.
(ii) An electron orbitting around nucleus.
(b) An artificial satellite is moving in a circular orbit of radius 36,000 km. Calculate its speed
if it takes 24 hours to revolve around the earth.
(3)
(4)