A hockey puck of mass m traveling along the x axis at 4.5 m/s hits another identical hockey puck at rest. If after the collision the second puck travels at a speed of 3.5 m/s at an angle of 30° above the x axis, what is the final velocity of the first puck?

The value of final velocity of the first hockey puck 2.3

Explanation:

Mass of hockey puck = m

Initial velocity

From conservation of momentum principal

4.5 m = m + m × × 3.5

= 1.5

0 = m + m × × 3.5

= - 1.75

Now final velocity of first puck

Put the values in above formula we get

2.3

This is the value of final velocity of the first hockey puck.

answer would be d.) i hope this

explanation:

pretty sure it's false