7th Class
Science
Time and Motion
Question Bank
Motion and Time
question_answer
DIRECTIONS: On the basis of following diagram/ picture answer the questions given below: The graph shows how the speed of a trolley changes as it moves across a floor. How far does the trolley travel at constant speed?
A)4m
B)12m
C)16m
D)22m
Correct Answer:
B
Solution :
The trolley moves all at a constant speed from 4 to 7 seconds. \[d=s\times t=4\times (7-4)=12m\]