Advertisements
Advertisements
प्रश्न
Study the speed-time graph of a car given alongside and answer the following questions:
(i) What type of motion is represented by OA ?
(ii) What type of motion is represented by AB ?
(iii) What type of motion is represented by BC ?
(iv) What is the acceleration of car from O to A ?
(v)What is the acceleration of car from A to B ?
(vi) What is the retardation of car from B to C ?
उत्तर
(i) OA represents uniform acceleration
(ii) AB represents constant speed.
(iii) BC represents uniform retardation.
(iv) Acceleration of car from O to A = slope of line OA
`a = ((40-0))/((10-0))
= 4 "m/s"^2`
(v) Acceleration of car from A to B is zero as it has uniform speed .
(vi) Retardation of car from B to C = slope of line BC
`a = ((40-0))/((50-30)) "m/s"^2`
= `2 "m/s"^2`
APPEARS IN
संबंधित प्रश्न
The velocity-time graph for part of a train journey is a horizontal straight line. What does this tell you about the trains velocity.
What can you say about the motion of a body if:
its displacement-time graph is a straight line ?
A car of mass 1000 kg is moving with a velocity of 10 m s−1. If the velocity-time graph for this car is a horizontal line parallel to the time axis, then the velocity of car at the end of 25 s will be :
Multiple choice Question. Select the correct option.
A graph is a straight line parallel to the time axis in a distance-time graph. From the graph, it implies:
Draw velocity – time graph for the following situation:
When a body, is moving with uniform velocity.
Diagram shows a velocity – time graph for a car starting from rest. The graph has three sections AB, BC, and CD.
Is the magnitude of acceleration higher or lower than that of retardation? Give a reason.
Which of the following graphs represents a motion with negative acceleration?
Draw the distance-time graphs of the bodies P and Q starting from rest, moving with uniform speeds with P moving faster than Q.
Mention the uses of the velocity-time graph.
Which of the following can determine the acceleration of a moving object.
