Question

In a relay race of 4 x 100 m, four runners run
with constant speeds of 20 m/s, 10 m/s,
72 km/h and 36 km/h respectively. What is the
average speed of the team?
(1) 14 m/s
(2) 70 m/s
m/s
(3) 20/3 m/s
(4)40/3 m/s​

Answer 1

Answer:

v=2m/s

Explanation:

the answer is given in the picture