An object moving on a horizontal, frictionless surface makes a glancing collision with another object initially at rest on the surface. in this case which of the following is true about momentum and kinetic energy? 4a) momentum is always conserved, and kinetic energy may be conserved. (b) kinetic energy is always conserved, and momentum may be conserved. (c) momentum is always conserved, and kinetic energy is never conserved. (d) both momentum and kinetic energy are always conserved. (e) neither momentum nor kinetic energy is conserved.
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