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The following physics responses are provided by a student and, as such, should be considered in that context. While every effort is made for accuracy, absolute correctness cannot be fully guaranteed.
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6
Neglecting gravity, doubling the exhaust velocity from a single stage rocket initially at rest changes the final kinetic energy of the burnout stage by what factor? Assume all other variables, such as the mass of the rocket and the mass of the fuel, do not change.It quadruples.
6
Neglecting gravity, doubling the exhaust velocity from a single stage rocket initially at rest changes the final velocity attainable by what factor? Assume all other variables, such as the mass of the rocket and the mass of the fuel, do not change.The final velocity doubles.
6
Object 1 has twice the mass of Object 2. Both objects have the same kinetic energy. Which of the following statements is true?Object 1 has a momentum of greater magnitude than Object 2.
6
Object 1 has twice the mass of Object 2. Each of the objects has the same magnitude of momentum. Which of the following statements is true?One object has twice the kinetic energy of the other.
6
Popeye, of mass 70 kg, has just downed a can of spinach. He accelerates quickly and stops Bluto, of mass 700 kg (Bluto is very dense), who is charging in at 10 m/s. What was Popeye's speed?100 m/s
6
The dimensional equivalence of the quantity "momentum" in terms of the fundamental quantities (mass, length, time) is:MLT^-1
6
The dimensional equivalent of the quantity impulse in terms of the fundamental quantities (mass, length, time) is which of the following?MLT^-1
6
The impulse experienced by a body is equivalent to its change in:momentum.
6
The kinetic energy of an object is quadrupled. Its momentum will change by what factor?two
6
The law of conservation of momentum is applicable to systems made up of objects described by which of the following?All the above choices are valid.
6
The units of impulse are equivalent to:kg*m/s
6
Three satellites are launched into space connected together. Once in deep space, an explosive charge separates the three satellites, and they move apart. The satellites each have different masses with m1 < m2 < m3. Which of the following statements is always true?Although one or more of the above statements could be true in special cases, they are not always true.
6
Two billiard balls have velocities of 2.0 m/s and -1.0 m/s when they meet in an elastic head-on collision. What is the final velocity of the first ball after collision?-1.0 m/s
6
Two identical 7-kg bowling balls roll toward each other. The one on the left is moving at +4 m/s while the one on the right is moving at -4 m/s. What is the velocity of each ball after they collide elastically?-4 m/s, +4 m/s
6
Two objects, one less massive than the other, collide elastically and bounce back after the collision. If the two originally had velocities that were equal in size but opposite in direction, then which one will be moving faster after the collision?The less massive one.
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