SCIENCE
PHYSICAL SCIENCES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What is the speed of the bobsled whose distance-time graph indicates that it traveled 80 m in 20 s?
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4 m/s
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1600 m/s
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80 m/s
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0.25 mph
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Explanation:
Detailed explanation-1: -The speed represented by a straight line on a distance–time graph equals the gradient of the graph. The gradient of a distance–time graph is the change in distance divided by the change in time. This can be written as = , where is the speed, is the change in distance, and is the change in time.
Detailed explanation-2: -A distance-time graph shows how far an object has travelled in a given time. It is a simple line graph that denotes distance versus time findings on the graph. Distance is plotted on the Y-axis. Time is plotted on the X-axis.
Detailed explanation-3: -In a distance-time graph, the slope or gradient of the line is equal to the speed of the object.
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