Question

An object moves with a uniform speed of 10 m/s for 5 s and then with a uniform speed of 5 m/s for 10 s. Find its average speed.​

Answer 1

Answer:-

The final answer is - 6.66m/s.

Solution:-

1st case:-

10 m/s for 5 seconds

s = vt

= 10×5

= 50m

2nd case:-

5 m/s for 10 seconds

s = vt

= 5×10

= 50 m

Average velocity = total distance/total time

= 50+50/5+10

= 100/15

= 6.66 m/s

Answer 2

1Answer:

EXPLANATION:-

For the first 5 seconds the distance travelled  = 10*5 = 50m                                        For the next 10 seconds the distance travelled = 5*10 = 50m                                            so,average speed = (50+50)/(5+10) = 100/15 = 6.67m/s