Question

(b) It has one-half its initial velocity (d) It moves in the opposite direction. 30.In an inelastic collision between two objects with unequal (a) does not change masses, (a)the total momentum of the system will incress. (b) the total momentum of the system will decrease. velocity 4 times of its initial velocity. In this proces the potential energy of the car (b) becomes twice to that of initial (e) becomes 4 times that of initial (d) becosnes 16 times that of initial (e) the kinetic energy of one objet will incresse by the as Whien a body ials frly to ards the eurth, then itstot amount that the kinetic energy of the other object decreases eneng (d) the momentum of one objoct will iscrease bey the amount (a) lncrenses that the momentum of the other object decreases. 31.Two objects move separately after colliding, and both the (e) remains cistant total momentum and total kinetic energy remain constant. (d) first increases and then decreases Identify the type of collision. (a) elastic (c) nearly elastic 32.A spring (k 100 N/m)is cut in half to muake two sew (a)S N to kft (b) decreases 30.If two forces of 4 N and 7 N towards right are acting on an object in a same direction and two forces of 3 N and 2 N towards left are opposing them. The resultant force is (bjinelastie (d) perfectly inelastic (b)6i N to right springs. What is the spring constant of the each of the new (c)1l N to right spring? (d) resultant force (b) 200 N/m (d) 100 N/ 40. Which one of the follkowing choices is an example of a non-coseervative foree (a) clastie speing force (b) kinetic frictional force (a) 300 N/m 33. If two sperings (k100 N/m) were placed parallel to each (e) electrical forcegiational force other,what is the spring constant of the two spring systeen (a) 300 N/ (c) 50 N/m 34. If the apeed of an object is doubled then its kisetke energy is : (a) Doulsid (c) Halved 35. A body is falling under the action of gravity alone in vacuam. Which of the following quantities remain constant during the fall? (a) Kinetic Energy (b) Potentinl energy (c)Total Mechanical Energy (d) Linear Velocity 36. A body is falling from a height h. After it hus falen height h/2, it will possess (b) 200 N/ (b) Quadruples (d) Tripled (a) only potential energy (b) only kinetic energy (e) half potential and half kinetic energy (d) more kinetic and less potential energy 37.A car is accelerated on a leveled road and attainsa

Answer 1