Advertisements
Advertisements
प्रश्न
(i) In speed time graph uniform motion is given by a straight line parallel to x axis so figure (a) denotes the uniform motion.
(ii) In speed time graph motion with increasing speed is shown by straight line with positive slope so figure (c) denotes the motion with speed increasing.
(iii) In speed time graph motion with decreasing speed is shown by straight line with negative slope so figure (b) denotes the motion with speed decreasing.
(iv) In speed time graph motion with oscillating speed is shown by zigzag line so figure {d) denotes the motion with speed oscillating.
Advertisements
उत्तर
As we know that acceleration is given by the slope of the velocity-time graph so we have to calculate the slope of the graph of each stage of motion,
Acceleration during O to P = (10 - 0)/ (10 - 0) = 1 ms-2
Acceleration during P to Q = (10 - 10)/ (20 - 10) = 0 ms-2
Acceleration during Q to R = (0 - 10) / (25 -20) = - 2 ms-2.
APPEARS IN
संबंधित प्रश्न
The speed-time graph of an ascending passenger lift is given alongside. What is the acceleration of the lift:
(1) during the first two seconds ?
(2) between second and tenth second ?
(3) during the last two seconds ?
What type of motion is represented by the following graph ?
What does the slope of a displacement-time graph represent?
The area of the right triangle under a speed-time graph is 500 m, in a time interval of 20 s. What is the speed of the body? Is the motion uniform or non-uniform?
Draw the following graph:
Distance versus time for a body at rest.
Interpret the following graph:
Draw distance-time graph to show:
Increasing velocity
Draw velocity-time graph to show:
Deceleration
Write a sentence to explain the shape of graph.
State whether true or false. If false, correct the statement.
The velocity – time graph of a particle falling freely under gravity would be a straight line parallel to the x axis.
An object is moving in a positive direction with positive acceleration. The velocity-time graph with constant acceleration which represents the above situation is:
