Slope of The Graph

Q. The velocity-time graph of a train traveling between two stations is plotted below. Find the train’s acceleration in each of the time intervals of OX, XZ and ZY respectively.

1. -2, 1, 4
2. 2, 1, -4
3. -2, 0, 4
4. 2, 0, -4

Q. If the slope of a distance vs time graph of a body increases, the body's speed ________.

1. remains constant
2. decreases
3. increases
4. becomes zero

Q. In a distance - time graph, zero slope implies the object is at rest.

1. False
2. True