In this problem, we're going to use the law of conservation of linear momentum.
, where p is momentum, m is mass, and v is velocity.
We now write the law of conservation of linear momentum in the x-direction as:
In the y-direction, we have:
We can solve for vfB from the equation of conservation of linear momentum in the y-direction equation as:
The drawing shows a collision between two pucks on an air-hockey table. Puck A has a mass of 3.5 kg and is moving along the x axis with a velocity of +5.5 m/s. It makes a collision with puck B, which has a mass of 6 kg and is initially at rest. After the collision, the two pucks fly apart with the angles shown in the drawing.(a) Find the final speed of:
puck A: m/s
puck B: m/s
(b) Find the kinetic energy of the A+B system:
before the collision: J
after the collision: J
What type of collision is this?
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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 Inelastic Collisions concept. You can view video lessons to learn Inelastic Collisions. Or if you need more Inelastic Collisions practice, you can also practice Inelastic Collisions practice problems.