Question

An object moves 20 m east in 30 s and then returns to its starting point taking an additional 50 s. If west is chosen as the positive direction, what is the average speed of the object

Answer 1

v = 0.5 m/s.

Step-by-step explanation:

Total distance, d = 20 m + 20 m = 40 m

Total time taken, t = 30 s + 50 s = 80 s

The average speed of an object is the total distance divided by time taken. So,

`v=(40)/(80)\\\\=0.5\ m/s`

So, the average speed of the object is 0.5 m/s.