Integrated Science

1A 10 kg box on a level floor needs 30 N to move it at constant speed (g = 10 m/s²). The coefficient of friction is

2What is the weight of a 50 kg student? (Take g = 10 N/kg.)

3Which instrument measures force?

4Friction always acts

5A 10 N force acts at the end of a 0.3 m spanner. The moment is

6A box of mass 5 kg is pushed with a net force of 20 N. What is its acceleration?

7The weight of a 5 kg mass on earth (g = 10 m/s²) is

8A spring stretches 2 cm with a 4 N load. With a 10 N load (within its limit) it stretches

9Force is measured in which SI unit?

10A spring extends 4 cm under 2 N. What load gives an extension of 10 cm (within the elastic limit)?