Collisions & Motion (Momentum & Energy) Video Lessons

Video Thumbnail

Concept

Problem: If two particles have equal momenta, are their kinetic energies equal?a. Yes, always.b. No, never.c. No, except when their speeds are the same.d. Yes, as long as they move along parallel lines.

FREE Expert Solution

Momentum:

p=mv

Kinetic energy:

KE=12mv2

Momentum is directly proportional to mass and velocity. If we half mass and double velocity, momentum will not change.

Kinetic energy is directly proportional to mass and square of velocity. If we half mass and double velocity, the kinetic energy will double. 

96% (146 ratings)
View Complete Written Solution
Problem Details

If two particles have equal momenta, are their kinetic energies equal?

a. Yes, always.

b. No, never.

c. No, except when their speeds are the same.

d. Yes, as long as they move along parallel lines.

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Collisions & Motion (Momentum & Energy) concept. You can view video lessons to learn Collisions & Motion (Momentum & Energy). Or if you need more Collisions & Motion (Momentum & Energy) practice, you can also practice Collisions & Motion (Momentum & Energy) practice problems.