REVISION WORK
1) State the SI units of mass,weight,volume,time and force
2) Mention any two contact forces
3) Mention 3 effects of a force
4) Why should the string of a simple pendulum be non-elastic?
5) What kind of motion does a travelling arrow have?
6) What kind of a force is a magnetic force?
7) Why do tyres of vehicles get worn out?
8) Name 2 lubricants .
9) What is a seconds pendulum?
10) Mention 2 instruments to measure the volume of liquids.
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