science
Grade-9
Easy
Question
A car starts moving from a point. It takes a U turn after covering some distance. The s-t graph of the car’s motion after it takes the U turn is ____.
- A straight line
- Has a constant slope throughout
- Has a negative slope
- All of the above
Hint:
All of the above
The correct answer is: All of the above
All of the given options are correct as the s-t graph shows the distance of the path in a given interval of time not the directions of the path.
So, as the distance is increasing is a straight line but is moving in the opposite direction the slope will decrease and is negative.
The direction of the path only represents the sign (+ve or -ve) of the slope.
+ve: increasing slope.
-ve: decreasing slope
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