Question

A distance-time graph indicates that an object travels 2m in 2s and then travels another 80m during the next 40s. what is the average speed of the object

Answer 1

A distance-time graph indicates that an object travels 2 m in 2 s and then travels another 80 m during the next 40 s. What is the average speed of the object?

a. 2 m/s

b. 4 m/s

c. 8 m/s

d. 10 m/s

whats the answer?

Answer 2

Answer:The average speed of the object is 1.95 m/s.

Explanation:

Distance traveled by an object in first interval,$T_1$ = 2 m

Time taken in firsts interval $T_1$ = 2 s

Distance traveled by an object in second interval interval,$T_2$ = 80 m m

Time taken in seconds interval$T_2$ = 40 s

$Average speed=\frac{total distance}{\text{Elapsed time}}=\frac{2 m+80 m}{2s+ 40 s}=1.95 m/s$

The average speed of the object is 1.95 m/s.