Question: If two cars are moving in opposite directions at speeds of 40 km/h and 60 km/h, what is their relative speed?
Options:
100 km/h
20 km/h
40 km/h
60 km/h
Correct Answer: 100 km/h
Solution:
Relative speed = Speed of car 1 + Speed of car 2 = 40 km/h + 60 km/h = 100 km/h.
If two cars are moving in opposite directions at speeds of 40 km/h and 60 km/h,
Practice Questions
Q1
If two cars are moving in opposite directions at speeds of 40 km/h and 60 km/h, what is their relative speed?
100 km/h
20 km/h
40 km/h
60 km/h
Questions & Step-by-Step Solutions
If two cars are moving in opposite directions at speeds of 40 km/h and 60 km/h, what is their relative speed?
Step 1: Identify the speed of the first car. In this case, it is 40 km/h.
Step 2: Identify the speed of the second car. In this case, it is 60 km/h.
Step 3: Since the cars are moving in opposite directions, we need to add their speeds together.
Step 4: Add the speeds: 40 km/h + 60 km/h = 100 km/h.
Step 5: The result, 100 km/h, is the relative speed of the two cars.
Relative Speed – Relative speed is the speed of one object as observed from another object, calculated by adding their speeds when they are moving towards or away from each other.
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