Physics
Figure shows the displacement of a body at different times.
(a) Calculate the velocity of the body as it moves for time interval
(i) 0 to 5 s,
(ii) 5 s to 7 s and
(iii) 7 s to 9 s.
(b) Calculate the average velocity during the time interval 5 s to 9 s.
[ Hint — From 5 s to 9 s, displacement = 7 m - 3 m = 4 m ]
Related Questions
From the displacement-time graph of a cyclist, given in figure, find —
(i) The average velocity in the first 4 s,
(ii) The displacement from the initial position at the end of 10 s
(iii) The time after which he reaches the starting point.
Following table gives the displacement of a car at different instants of time.
Time (s) 0 1 2 3 4 Displacement (m) 0 5 10 15 20 (a) Draw the displacement-time sketch and find the average velocity of car.
(b) What will be the displacement of car at (i) 2.5 s and (ii) 4.5 s ?
Figure ahead represents the displacement-time sketch of motion of two cars A and B.
Find —
(i) The distance by which the car B was initially ahead of car A.
(ii) The velocities of car A and car B
(iii) The time in which car A catches car B
(iv) The distance from start when the car A will catch the car B
A body is moving in a straight line and its displacement at various instants of time is given in the following table —
Time (s) 0 1 2 3 4 5 6 7 Displacement (m) 2 6 12 12 12 18 22 24 Plot displacement-time graph and calculate —
(i) Total distance travelled in interval 1 s to 5 s,
(ii) Average velocity in time interval 1 s to 5 s.