Consider two objects (Object 1 and Object 2) moving in the same direction on a f
ID: 1978639 • Letter: C
Question
Consider two objects (Object 1 and Object 2) moving in the same direction on a frictionless surface. Object 1 moves with speed and has mass . Object 2 moves with speed and has mass .Which object has the larger magnitude of its momentum?
a)Object 1 has the greater magnitude of its momentum.
b)Object 2 has the greater magnitude of its momentum.
c)Both objects have the same magnitude of their momenta.
Which object has the larger kinetic energy?
a)Object 1 has the greater kinetic energy.
b)Object 2 has the greater kinetic energy.
c)The objects have the same kinetic energy.
Explanation / Answer
Momentum = m*v v*2m = Momentum 1 v2*v*m = Momentum 2 Object 1 has a greatermomentum Kinetic energy = 0.5*m*v^2 0.5*2m*(v^2) = Kinetic energy 1 0.5*m*2*(v^2) = Kinetic energy 2 The objects have thesame kinetic energy