Moderator's challenge
Car A travels a distance of 80 m in 5s whereas car B travels a distance of 1km in 50 s. Compare the speed of car A and car .
Answers
For car A :
It travels distance of 80 m
Time taken = 5 s
We know that,
◕ Distance = Speed × Time
⇒ 80 = Speed × 5
⇒ Speed = 80/5
⇒ Speed = 16 m/s
∴ Speed of car A = 16 m/s.
For car B:
It travels distance of 1 km = 1000 m
Time taken = 50 s
We will use same formula i.e.
◕ Distance = Speed × Time
⇒ 1000 = Speed × 50
⇒ Speed = 1000/50
⇒ Speed = 20 m/s
∴ Speed of car B = 20 m/s
Here,
∵ Speed of car B > Speed of car A
∴ Car B travels faster than car A.
Car B travels faster than car A.
Explanation :
Let's find speed of car A first :-
● Distance = 80 m
● Time = 5 s
● Speed = ?
Using the speed formula we get :-
○ Speed = Distance/Time
⇒ Speed = 80/5 m/s
⇒ Speed = 16 m/s
∴ Speed of car A = 16 m/s
Now let's find speed of car B :-
● Distance = 1 km = 1000 m
● Time = 50 s
● Speed = ?
___________________
○ Speed = Distance/Time
⇒ Speed = 1000/50
⇒ Speed = 20 m/s
∴ Speed of car B = 20 m/s
Now comparing speed of both cars :-
As, 20 m/s > 16 m/s
So, speed of car B > Speed of car A.
∴ Speed of car B is more than speed of car A