Across
- 2. The _______ of a couple is the product of one of the forces of the couple and the perpendicular distance between the lines of action of the forces
- 5. Distance travelled per unit time
- 9. ________ collision occurs when both momentum & kinetic energy of the system are conserved
- 10. the degree of agreement (scatter, spread) of repeated measurements of the same quantity
- 12. the rate of change of velocity
- 14. An upward force exerted by a fluid on a submerged or floating object; arises because of the difference in pressure between the upper and lower surfaces of the object
- 17. the force per unit area
- 20. Newton's __________ Law states when object X exerts a force on object Y, object Y exerts a force of the same type that is equal in magnitude and opposite in direction on object X.
- 21. The product of the force and the perpendicular distance of its line of action to the pivot
- 23. __________ error is the type of error which causes readings to deviate in one direction from the true value
- 24. the mass per unit volume
- 26. Newton's ______ Law states every body continues in a state of rest or uniform motion in a straight line unless a net (external) force acts on it.
- 29. the product of the force and displacement (of its point of application) in the direction of the force
- 30. Newton's _________ Law states the rate of change of momentum of a body is directly proportional to the net force acting on the body, and the momentum change takes place in the direction of the net force.
- 31. the rate of change of momentum
Down
- 1. ________'s Law states within the limit of proportionality, the extension produced in a material is directly proportional to the force/load applied
- 3. The ratio of (useful) output energy of a machine to the input energy
- 4. the product of mass and velocity
- 6. Distance moved in a certain direction from start to end point
- 7. Centre of _________ is the point in space through which the entire weight of the object may be considered to act
- 8. _________ collision occurs when only momentum is conserved, total kinetic energy is not conserved
- 11. the degree of agreement between the result of a measurement and the true value of the quantity
- 13. the product of the force and the time during which the force acts
- 15. ___________ error is the type of error which causes readings to scatter about the true value
- 16. the rate of change of displacement
- 18. Total length covered irrespective of the direction of motion
- 19. A quantity that has both magnitude and direction. It can be described by an arrow whose length represents the magnitude of the vector and the arrow-head represents the direction of the vector.
- 21. a measure of the amount of matter in a body, & is the property of a body which resists change in motion.
- 22. the force of gravitational attraction on a body
- 25. A quantity that has a magnitude only. It is completely described by a certain number and a unit.
- 27. the work done per unit time
- 28. Principle of ________ states for a body to be in equilibrium, the sum of all the anticlockwise moments about any point must be equal to the sum of all the clockwise moments about that same point