Question

A girl travels 50m in 12s and then another 30m in 5s .Calculate her average speed?​

Answer 1

Answer:

4.71m/s

Explanation:

Average speed = Total distance travelled ÷ Total time taken.

80/17=4.71

4.71m/s

Answer 2

Answer:

• Average speed = Total distance travelled ÷ Total time taken.

In this question,

• Total distance travelled = 50m + 30m

                                                = 80m.

• Total time taken = 12s + 5s

                                     = 17s

So, Average speed would be 80 ÷ 17

= $\frac{80}{17}$

 = 4.71 m/s. or 4.71 meter per second.