12) What is velocity-time graph?
Draw the velocity-time graph curves for Uniform motion, uniform acceleration
increasing acceleration and decreasing acceleration
Answers
Explanation:
A velocity-time graph shows changes in velocity of a moving object over time. The slope of a velocity-time graph represents acceleration of the moving object.
Explanation:
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Questions & Answers
CBSE
Physics
Grade 12
Velocity-Time Graph
Question
Answers
Related Questions
Draw a velocity-time graph for a uniform accelerated motion. What does its slope depict?
Answer
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Hint: Use relation between acceleration, velocity and time to find the nature of the graph. The Velocity-time graph gives acceleration as slope. In non-uniform motion acceleration changes, eventually slope changes. The slope is either increasing or decreasing. While, in uniform motion, the acceleration remains constant, thus slope remains the same.
Complete solution:
The velocity-time graph for a uniform accelerated motion is shown below.
We know formula for acceleration is given by,
a=vt
where,
a: Acceleration
v: Velocity
t : Time
From the above equation, it can be understood that the slope calculated from the velocity-time graph gives acceleration. Thus, the velocity-time graph of a uniformly accelerated motion is a straight line graph inclining towards the time axis on the X-axis. If the body is moving with a positive constant acceleration then the graph slopes upward. In case, if the body is moving with negative constant acceleration then the graph slopes downward.