Physics
From the given displacement-time graph, answer the following questions:

(i) The kind of motion depicted in this graph is :
- uniform
- non-uniform
- retardation
- all of the above
(ii) The velocity between point A and C is:
- 20 ms-1
- 5 ms-1
- 10 ms-1
- 15 ms-1
(iii) The displacement at t = 3s is:
- 15 m/s2
- 12.5 m/s2
- 40 m
- 30 m
Motion in One Dimension
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Answer
(i) uniform
Reason — As the graph shows the linear relationship between displacement and time i.e., the car travels equal distance in equal intervals of time in a certain direction. Thus, it is moving with uniform motion.
(ii) 10 ms-1
Reason — As, velocity is the ratio of displacement and time, therefore,
(iii) 40 m
Reason — When we observe the graph, we notice that at t = 3 s, the displacement axis shows 40 m, hence, displacement at t = 3 s is 40 m
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Related Questions
A car is moving in a straight line with speed 18 km h-1. It is stopped in 5s by applying the brakes.
Find —
(i) the speed of car in m s -1,
(ii) the retardation and
(iii) the speed of car after 2 s of applying the brakes .
The slope of displacement-time graph gives:
- Velocity
- Acceleration
- Speed
- Displacement
Out of the following, the correct displacement-time graph for uniform motion is:
From the velocity-time graph, we can determine :
- The displacement of the body in a certain time interval.
- The acceleration of the body at any instance.
- Both (a) and (b)
- None of these