Question

12. The unit of the force of the body in SI is: A) kilogram per cubic meter B) kilogram C) Newton D) kilogram meter per second 13. The force that occurs during deformation of the body is directly proportional to the elongation of the body and directed toward the opposite external force: A) elasticity force B) force of gravity C) force of the reaction of the support D) force of friction 14. The force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other named as: A) elasticity force B) force of gravity C) force of the reaction of the support D) force of friction 15. The velocity with which the satellite stops moving around the Earth and becomes a satellite of the Sun A) first cosmic velocity B) second cosmic velocity C) third cosmic velocity D) fourth cosmic velocity 16. The mechanical work of typical motion is calculated by the formula: B) A=mg(h - h) D) ΔΕ = A A) A=F.S.cosa k(x? - x) 2 17. Unit of energy in SI is: A) Joule B) Newton D) expressed as a percentage (%) C) Watts

Answer 1

12 unit of Force is Newton. (e) 13 1^ elasticity Force 20 (D) Friction Force 15. (B) second cosmic velocity from earth escope and rodate a sound sun. 16 work done W =FSCosa. F al3 A - FSCosa. Va s 27) C energy is Joule unit of ene A)