# physics

posted by .

in apool game,a cue ball traveling at 0.75 m/s hits the stationary eight ball The eight ball moves with a velocity of 0.25 m/s at an angle of 37 deg reletive to the cue balls inital direction assuming that the collision is inelastic at what angle will the que be deflected and what will be its speed?

• physics -

Whether the collision is elastic or inelastic, the total momentum of the two balls in the direction perpendicular to the cue ball's initial direction must be zero, since there was no original momentum in that direction. Therefore
MV1 sin 37 - MV2 sin A = 0
M Vo = M cos 37 + M V2 cos A
since momentum in the forward direction is conserved.
The M's all cancel out
Vo = 0.75 m/s
V1 = 0.25 m/s is the eight-ball's final velocity.
"A" is the unknown angle of the cue ball, and V2 is its velocity. It will be a negative angle.
You have two equations in two unknowns to solve.

• physics -

The velocity is 0.0000 m/s

• physics -

• physics -

its a glancing collision, i believe that the question improperly says the collision is inelastic. It should be elastic. there fore the sum the y and x vectors. substitute. You should get velocity .57 m/s and 15.2 degrees

## Similar Questions

1. ### physics

In a game of pool the cue ball strikes another ball of the same mass and initially at rest. After the collision the cue ball moves at 3.50 m/s along a line making an angle of 22 degrees with its original direction of motion. and the …
2. ### physics

In a game of pool, the cue ball strikes another ball of the same mass and initially at rest. After the collision, the cue ball moves at 3.10 m/s along a line making an angle of 27.0° with its original direction of motion, and the …
3. ### Physics

A cue ball traveling at 4.0 m/s makes a glancing, elastic collision with a target ball of equal mass that is initially at rest. The cue ball is deflected so that it makes an angle of 30° with its original direction of travel. (a) …
4. ### science

A cue ball traveling at 4.0 m/s makes a glancing, elastic collision with a target ball of equal mass that is initially at rest. The cue ball is deflected so that it makes an angle of 30° with its original direction of travel. (a) …
5. ### Physics HELP HELP

A cue ball traveling at 4.0 m/s makes a glancing, elastic collision with a target ball of equal mass that is initially at rest. The cue ball is deflected so that it makes an angle of 30° with its original direction of travel. (a) …
6. ### physics

In a game of pool, the cue ball strikes another ball initially at rest. After the collision, the cue ball moves at 4.15 m/s along a line making an angle of -25° (i.e. below the x-axis) with its original direction of motion (the x-axis), …
7. ### Physics

While playing a game of billiards, your 0.50 kg cue ball, travelling at 1.9 m/s, glances off a stationary 0.30 kg billiard ball so that the billiard ball moves off at 1.3 m/s at an angle of 32º clockwise from the cue ball’s original …
8. ### Physics Part 1

Rick is playing billiards and hits the cue ball. It makes contact with the 8 ball head on. If before the collision the cue ball was travelling at 2.4 m/s and after the collision the 8 ball was traveling at 2.13 m/s. How fast and in …
9. ### Impulse and Momentum

In the game of billiards, all the balls have approximately the same mass, about 0.20 kg. The cue ball moving west with a speed of 4.5m/s strikes another ball at rest. After the collision the cue ball moves at an angle of 55degree north …
10. ### Physics

A cue ball traveling at 0.70 m/s hits a stationary 8-ball, which moves off with a speed of 0.23 m/s at an angle of 39° relative to the cue ball's initial direction. Assuming that the balls have equal masses and the collision is inelastic, …

More Similar Questions