Perpendicular is a line, which makes a 90° angle with any other line. Where as perpendicular bisector is a line, which makes a 90° angle with a line segment as well as , the line bisects ( divides into 2 equal parts) the line segment.

A perpendicular bisector is a line that meets a given line segment at a right angle and cuts the given line segment into two equal halves. Then, we extend the angle bisector so that it intersects the initial line. We can then prove that this line will meet the given line at its center and form a right angle.

Parallel lines are lines in a plane that are always the same distance apart. Parallel lines never intersect. Perpendicular lines are lines that intersect at a right (90 degrees) angle.

The slope of the distance-time graph indicates speed. It is because the slope of a distance-time graph determines the speed of that body, so the steeper the slope greater will be the speed of the body.

The slope of a position graph represents the velocity of the object. So the value of the slope at a particular time represents the velocity of the object at that instant.

In a distance-time graph, the slope of the graph is zero, the object is at rest or in motion & why?

The gradient of a distance-time graph represents the speed of an object. The velocity of an object is its speed in a particular direction. The slope on a velocity-time graph represents the acceleration of an object.

In position and time graphs, the slope of line indicates the velocity. Therefore negative slope of a position-time graph actually indicates negative velocity. Negative velocity is defined as the velocity of the object moving in an opposite direction.

Nope. Distance is a non-directional quantity. During a motion, it can only either be kept unchanged or increased. Therefore, within a particular period, the distance-time graph is always either constant or increasing in the absence of decreasing and a negative slope.

Constant speed is shown by straight lines on a graph. steeper dashed line got there before the other one: A steeper line indicates a larger distance moved in a given time. In other words, higher speed. Both lines are straight, so both speeds are constant.

Constant speed is also called as uniform rate which involves something travelling at fixed and steady pace or else moving at some average speed. For example, A car travels 3 hours. It travels 30 miles in the first hour, 45 miles in the second hour and 75 miles in the third hour.

If the V-T line has a positive slope, the object is undergoing acceleration in positive direction.

1. If v is in positive quadrant, object is speeding up.
2. If v is in negative quadrant, object is slowing down.

Speed-time graphs

1. The steeper the slope of the line the greater the acceleration.
2. If the line slopes upward from left to right, this means the object is speeding up. Its acceleration will be positive.
3. If the line slopes downward from left to right on the graph, this means that the object is slowing down.