4.The mass of an iron rod is 52 g. The density of iron is 7.8 gcm-3 Find the volume of the rod.
5. Describe the method in steps to find the density of a pebble.
6.A car covers 80 km in 2 hours and a bus covers 100 km in 5 hours. Which of the two travels faster?
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Answer:
6
Explanation:
speed = distance/ time
=80/2. 100/5
=40. km/h 25 km/ h
car is faster than the bus by 15 km/ h
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