Get full-fledged knowledge when two objects move in opposite direction by going through the complete article. Learn Formula, Solved Examples on Two Bodies Moving in Opposite Direction towards each other. Get Step by Step Solutions for all the Problems on finding Relative Speed, Time and Distance. If two bodies move in opposite direction relative speed is obtained by adding the speeds of both the bodies.
How to Calculate Time Speed and Distance for Two Objects Moving in Opposite Direction?
Consider Two Objects Moving in Opposite Direction with different speeds
Speed of 1st Object = x km/hr
Speed of 2nd Object = y km/hr
Relative Speed = (x+y) km/hr
The speed of One Object with respect to another is called relative speed.
Distance between them = d km
Time after two objects meet = d km/(x+y) km/hr
Distance covered in t hours = relative speed * time
= (x+y) km/hr * t
Solved Examples on Two Object Moving in Opposite Direction
1. Two Athletes are running from the same place at the speed of 10 km/hr and 5 km/hr. find the distance between them after 20 minutes if they move in the opposite direction?
Speed of 1st Athlet = 10 km/hr
Speed of 2nd Athlet = 5 km/hr
Relative Speed = (10+5) km/hr
= 15 km/hr
Time = 20 min = 20/60 = 1/3 hr
Distance = Relative Speed * Time
= 15 km/hr * 1/3 hr
= 5 km
Distance between Two Athlets is 5 Km.
2. Two cars travel from the same location at the speed of 10 km/hr and 5 km/hr respectively. Calculate the distance between the cars after 30 minutes given that both cars are traveling in the opposite direction?
Speed of 1st Car = 10 km/hr
Speed of 2nd Car = 5 km/hr
Time = 30 minutes = 1/2 hr
Relative Speed of Cars = (10+5) km/hr
= 15 km/hr
Distance between Cars = Relative Speed * Time
= 15 km/hr * 1/2 hr
= 7.5 km
Both cars have a distance of 7.5 km