Question

Distance-time graph of two objects A and B are shown below.

Which statement is true for the speed of object A and B?

• A. Speed of object A is greater than object B
• B. Speed of object A is smaller than object B
• C. Both have same speed
• D. Speed of Object A is double the speed of object B.

Answer 1

Answer: (B), (D)

Speed of object A is smaller than object B

The slope of distance-time graph for object B is greater than the object A. Since, the slope of distance-time graph represents speed; hence, object B travels faster than object A. We do not know the magnitude of speed of object A or B and we do not know the magnitude of slopes as well. Hence, we can't say whether speed of object A is double the speed of object B.