If a body is in motion with variable acceleration, the velocity-time graph
A
is a straight line with a positive slope
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B
is a straight line with a negative slope
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C
is a straight line parallel to the time axis
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D
is a curve
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Solution
The correct option is D is a curve The slope of a velocity-time graph gives acceleration. For a motion with variable acceleration, the slope of the curve is different at different point. This indicates that the curve will be a curve of any shape.