Question

7. In a race, a girl runs 100 metres in 20 seconds. Her average speed is
(a) 5 m/s
(b) 10 m/s
(c) 15 m/s
(d) 20 m/s
Solmetoles 5 minutes from her house to reach her school on a bicycle​

Answer 1

Given : -

• Distance = 100m

• Time = 20sec

To Find : -

• Her average speed is

Solution : -

According to the formula :

Average speed = Distance / time

Substitute all values :

Average Speed = 100/20

Average Speed ≈ 5m/sec

Answer 2

Answer:

according to formula

Explanation:

avarage speed = distance/time

substitute all

average speed = 100/20

average speed = 5m/sec