Question

An object travels 40 m in 5 s and then another 20 m in 10 s. What is the average speed of the object?

Answer 1

Answer:

$avg \: speed \: = \frac{total \: distance}{total \: time} \\ \\ avg \: speed \: = \frac{60}{15} = 4 \: \frac{m}{s}$

hope the answer will help you

Answer 2

Answer:

total distance travelled =60m

total time taken =15sec

Avg. speed = total distance travelled /total time taken

=>60/15= 4

=>4m/s