X. Momentum and Collisions. Answer true or false. 79. Two objects are moving wit
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X. Momentum and Collisions. Answer true or false. 79. Two objects are moving with the same velocity. The one with the largest mass has the smallest momentum. 80. Two objects have the same mass. The one with the highest velocity has the higher momentum. 81. Conservation of momentum in collision processes is a direct result of Newton’s first law. 82. If a cannon fires a cannonball in an easterly direction, the tendency of the cannon to move to the west is a result of the principle of conservation of energy. 83. The impulse of a force is the change in momentum it imparts to an object 84. An elastic collision conserves momentum and kinetic energy. 85. When two objects collide and stick together, their collision is elastic. 86. If two object collide elastically, they must have the same mass 87. The center of mass of an isolated system moves at a constant velocity as long as a constant force is applied. XI. Rotational motion. Answer true or false. 88. The equations of rotational kinematics are of the same form as the equations of linear kinematics with the variables x,v,a replaced by O,w,a 89. The rotational potential energy is given by U=Igh 90. The Kinetic every stored in the rotational motion of an object is in addition to any kinetic energy associated with its translational motion. 91. The maximum torque that a given force can exert on an object occurs when the force is applied to the axis of rotation 92. Torque is analogous to work in linear motion 93. The moment of inertia of a circular cylinder of radius R about its axis of symmetry is the same as the moment of inertia of a sphere of radius R 94. If no external torque acts on an object it’s angular momentum remains constant 95. If the moment of inertia of a rotating object decreases, its angular velocity also decreases, assuming no external torque is applied 96. Angular momentum is a scalar 97. A particle moving with a constant velocity in a straight line past a point has a constant angular momentum with respect to that point 98. A particle moving in a circle around a point has a constant angular momentum with respect to that point 99. Angular quantities and linear quantities cannot be released X. Momentum and Collisions -79. Two objects are moving with the same velocity. The one with the largest mass has the smallest momentum higher momentum first law to move to the west is a result of the principle of conservation of energy 80. Two objects have the same mass. The one with the highest velocity has the 81. Conservation of momentum in collision processes is a direct result of Newton's 82 If a cannon fires a cannonball in an easterly direction, the tendency or the cannon S3. The impulse of a force is the change in momentum it imparts to an object 84 An elastic collision conserves momentum and kinetic energy. _ 85, whe. two objects collide and stick together, their collision is elastic. 86. If two objects collide elastically, they must have the same mass. -87. The center of mass of an isolated system moves at a constant velocity as long as a constant force is applied. XI. Rotational Motion 88. The equations of rotational kinematics are of the same form as the equations of linear kinematics with the variables x, v, a replaced by ,a) , . -89. Te rotational potential energy is given by U,-Igh. 90. The kinetic energy stored in the rotational motion of an object is in addition to any kinetic energy associated with its translational motion. _ 91. The maximum torque that a given force can exert on an object occurs when the force is applied to the axis of rotation. 92 Torque is analogous to work in linear motion. --93. The moment of inertia of a circular cylinder of radius R about its axis of symmetry is the same as the moment of inertia of a sphere of radius R. 94. If no external torque acts on an object its angular momentum remains constant 95. If the moment of inertia of a rotating object decreases, its angular velocity also decreases, assuming no external torque is applied. 96. Angular momentum is a scalar -97. A particle moving with constant velocity in a straight line past a point has a constant angular momentum with respect to that point. 98. A particle moving in a circle around a point has a constant angular momentum with respect to that point. 99. Angular quantities and linear quantities cannot be related. 100. If a sphere of mass M and radius R and a cylinder of mass M and radius R start rolling down a ramp from the same starting location at the same time, they both reach the bottom of the ramp at the same time.Explanation / Answer
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79. Two objects are moving with the same velocity. The one with the largest mass has the smallest momentum.
False, momentum is proportional to mass
80. Two objects have the same mass. The one with the highest velocity has the higher momentum.
True, momentum = mass * velocity
81. Conservation of momentum in collision processes is a direct result of Newton’s first law.
True, As there is no net force velocity does not change as per first law
82. If a cannon fires a cannonball in an easterly direction, the tendency of the cannon to move to the west is a result of the principle of conservation of energy.
False, it is conservation of momentum
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