Question

Illub UT DUIT
Wurel - Uy
7. The dimensions of a hall are 10m x 7m x 5m. If the density of air is 1.11 kg/mº, find the
mass of air in the hall.
8. The mass of density bottle is 51.59 when empty, 76.59 when full of water and 71.859
when full of an oil. Find:
(a)Capacity of density bottle (b) Density of oil (c) Relative density of oil.
9. 5 litres of kerosene oil is found to weigh 4.4kg. Find the density of kerosene oil in (a)
CGS system (b) SI system
10. A piece of lead weighs 2329 and has a volume of 20cm. Find the density of lead.
11. Arrange the following speeds in increasing order. 10 m/s, 1 Km/min, 18 km/h.
12. A train takes 2h to reach station 'B' from station 'A', and then 3h to return from
station 'B' to station 'A'. The distance between the two stations is 200km.
Find (a) Average speed (b) Average velocity of the train
13. A car travels a distance 50km with a velocity 25km/h and then 60 km with a velocity
20km/h in the same direction. Calculate (a) the total time of journey
(b) average velocity of the car.
14. The velocity of an object increases at a constant rate from 20m/s to 50m/s in 10s.
Find the acceleration
15. A pebble thrown vertically upwards with an initial velocity 50m/s comes to a stop in 5s
Find the retardation.
16. A bicycle initially moving with a velocity 5m/s accelerates for 5s at a rate of 2m/s.
What will be its final velocity ?
17. Define the terms and write their SI & CGS units (a) Displacement (b) Uniform speed
(c) Average velocity (d) Acceleration.
La line with mead 18Vm/h T+
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Answer 1

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Explanation:

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