Question
Identify the cases where two objects moving in opposite
directions have a relative speed of 30 km/h.Solution
Explanation:Â When two objects move in opposite directions, their relative speed is the sum of their speeds. Here, 40 + 10 = 50 km/h, which does not match the required 30 km/h. However, the closest option is 40 km/h and 10 km/h.
Relational Algebra is
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