Question

1. What can you say about the motion of a body if (a) its displacement - time graph is a straight line
parallel to X-axis (b) its velocity - time graph is a straight line through origin?​

Answer 1

a) If the displaceme time graph of the motion of a body is a straight line the velocity of the body is zero

• The slope of displacement-time graph measures velocity of the body

• If the graph is a straight line the velocity of the motion of the body is zero

b) If velocity-time graph of a particle is a straight line through origin then the velocity of the body is zero

• If the velocity-time graph starts at zero and makes a straight line the body does not moves throughout the motion
• The displacement-time graph of the body will also be zero in this case