physics
posted by faisal .
A police car moveing at 140 km/h is changing a lorry moveing at 120 km/h.If the initial distance betwen them is 500m,how many minutes later and at what distance from its initial position does the police carb catch the lorry

The distance between them decreases ar 20 km/h rate. What is 0.5 km/20 km/h?
0.025 h = 1.5 minutes.
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