1) A mechanical action is a a) vector b) mass c) weight d) force 2) A force is characterized by its: a) point of application  b) point of application, line of action , direction  c) point of application, line of action , direction, magnitude d) magnitude and direction 3) A force is represented by a: a) vector b) length c) diagram d) scale 4) The unit of force in SI unit is: a) joule (J) b) kilogram (kg) c) Newton  (N) d) centimeter (Cm) 5) The magnitude of a force is measured using a: a) balance b) spring balance c) ammetre d) voltmeter 6) Among the following forces those that are acting at a distance are: a) Magnetic, weight, muscular and electric b) Electric, weight, magnetic and reaction of support c) Weight, electric and magnetic d) Weight, magnetic and tension 7) Among the following forces those that are contact forces are: a) Tension, reaction of support and friction b) Reaction of support, muscular, magnetic and friction c) Friction, muscular, tension and weight d) | Muscular, reaction of support, friction and electric 8) Friction force: a) Depends on the nature of surfaces b) Exists on smooth surfaces  c) Does not affect the motion of bodies 9) Magnetic force acts on the point of application which is: a) Point of contact b) Orthocenter c) Center of gravity d) Center point 10) Tension force acts on point of application which is: a) Center of gravity b) Point of contact c) Centroid d) Orthocenter 11) the force exerted by a table on a box placed on it is: a) Tension b) Weight c) Friction d) Reaction of support 12) The line of action of gravitational force is: a) Straight line b) Horizontal line c) Vertical line d) Oblique line 13) The forces acting on a stone shot up in air are: a) Two forces b) One force c) Three forces d) Four forces 14) the direction of the gravitational force is: a) Upward b) Downward c) To the right d) To the left 15) The center of gravity of a homogeneous sheet whose shape is a square is the: a) Point of intersection of medians b) Midpoint of the side of a squared c) Point of intersection of diagonals d) Point of intersection of diameters 16) The mass of a body is measured using the formula: a)   b) c) d) 17) the weight of a box is 10N. It is represented by a force vector of --------- cm using the scale 1cm for 2N Newton (N) a) 2cm b) 4cm c) 5cm d) 1cm 18) The weight of a body ---------- as position varies whereas the mass of a body ---------- as position varies a) Remains constant, varies b) b | Varies, varies c) Remains constant, Remains constant d) Varies, remains constant 19) the weight of a body of mass 500g is equal to ----------- if the gravitational field strength is g = 10N/Kg a) 5000N b) 50N c) 5N d) 0.5N 20) The mass of a body of weight 15N is equal to ---------- when the gravitational field strength is g = 10N/Kg a) 150N b) 1.5Kg c) 1.5N d) 1.5g 21) The gravitational field strength on a body of mass 1500g and of weight 15N is equal to: a) 0.01N/Kg b) 100N/Kg c) 1N/Kg d) 10N/Kg 22) A box is at rest on a plane. The normal reaction exerted by the plane on the box is: a) Vertical b) Horizontal c) Oblique 23) The normal reaction of support does not act on an object if: a) The object is suspended in the air b) The object is lightweight c) The object is at rest d) The object is moving 24) Weight of a body: a) Depends on its mass b) Depends on gravity c) Is a force that always acts on all bodies d) a, b and c. 25) Two bodies of masses m each, carrying positive charges, are suspended by two strings, then each body is subjected to: a) one force b) two forces c) three forces d) four forces

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