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Two cars start from the same point and travel in opposite directions at speeds o

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Question: Two cars start from the same point and travel in opposite directions at speeds of 70 km/h and 50 km/h. How far apart will they be after 2 hours?

Options:

  1. 240 km
  2. 220 km
  3. 200 km
  4. 180 km

Correct Answer: 240 km

Solution: 

Relative speed = 70 + 50 = 120 km/h. Distance apart after 2 hours = 120 × 2 = 240 km.

Two cars start from the same point and travel in opposite directions at speeds o

Practice Questions

Q1
Two cars start from the same point and travel in opposite directions at speeds of 70 km/h and 50 km/h. How far apart will they be after 2 hours?
  1. 240 km
  2. 220 km
  3. 200 km
  4. 180 km

Questions & Step-by-Step Solutions

Two cars start from the same point and travel in opposite directions at speeds of 70 km/h and 50 km/h. How far apart will they be after 2 hours?
  • Step 1: Identify the speeds of the two cars. Car A travels at 70 km/h and Car B travels at 50 km/h.
  • Step 2: Since the cars are moving in opposite directions, we need to add their speeds together to find the relative speed.
  • Step 3: Calculate the relative speed: 70 km/h + 50 km/h = 120 km/h.
  • Step 4: Determine how long the cars have been traveling. In this case, they have been traveling for 2 hours.
  • Step 5: Calculate the distance apart after 2 hours using the formula: Distance = Speed × Time.
  • Step 6: Substitute the values into the formula: Distance = 120 km/h × 2 hours.
  • Step 7: Perform the multiplication: 120 × 2 = 240 km.
  • Step 8: Conclude that after 2 hours, the two cars will be 240 km apart.
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