Question

1. Siham is practicing for the marathon, she can run 1200 meters in 5 min, what is her speed in m/sec. Show all your work including the formula and units.
2. You need to get to class, 200 meters away, and you can only walk in the hallways at about 1.5 m/s. (if you run any faster, you’ll be caught for running). How much time will it take to get to your class? include formula and units.
3.Mahmoud's speed is 60 km/hr. What is the distance that he will cover in 5.5 hours. Show all your work including formula and units.
4.Mahmoud's speed is 60 km/hr. What is the distance that he will cover in 5.5 hours. Show all your work including formula and units.

Answer 1

1. speed = distance/time taken

= 1200/5×60

= 4 m/sec.

then Siham run 4 meters each ine second.

2. if speed = distance/time taken

then time taken= distance/ speed

= 200/1.5 = 200÷(3/2)

= 200×(2/3)

= 133.3333....sec.

then I need 133.333 sec to get to class early.

3. from the previous example

then distance = speed × time taken

= 60×5.5

= 60×(11/2)

=330 km. or 330×10³m.

then Mahmoud ❤️ covers 330km.

4.the q question is repeated.