Momentum and Kinetic Energy (MC) Due on Friday, Oct 20 at 11:59 pm (EDT) Read th

Question

Momentum and Kinetic Energy (MC) Due on Friday, Oct 20 at 11:59 pm (EDT) Read the following statements carefully and indicate true or false. FalseIf two particles of different masses have equal kinetic energy TrueIf the kinetic energy of a single particle is zero, its momentum FalseThe kinetic energy is always conserved both in elastic collisions TrueA large force always produces a larger impulse on a body than a TrueThe linear momentum of an object is proportional to the mass of FalseIf the momentum of a single particle is zero, its kinetic energy TrueThe momentum of an isolated system is always conserved no they also have equal momentum. must be zero. and inelastic collisions smaller force. the object. may not be zero. matter what kind of force is acting inside the system.

Explanation / Answer

1. if two masses of equal KE has different masses m1 and m2

then m1v1^2 = m2v2^2

hence theiore momentums m1v1 and m2v2 are different

so False

2. if KE of a single partiel is 0, then 0.5mv^2 = 0

hence v = 0

hence mv = 0

so its momentum is 0

hence TRUE

3. in elastic collisions, KE is conserved, in inelastic collision only momentum is conserved and KE is not conserved

Hence FALSE

4. impulse = F*dt

so larger force for smaller time may produce equal impulse on an object with smaller force in larger time

hence FALSE

Related Questions

Navigate

• Browse (All)
• Browse M
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.