For the situation in the figure below, use momentum conservation to determine (a) the magnitude and (b) the direction of the final velocity of ball 1 after the collision. The angle ϕ = 52.0 o. (a) Top view of two balls colliding on a horizontal surface.
(b) This part of the drawing shows the x and y components of the velocity of ball 1 after the collision.

Awater balloon launcher uses an elastic band with a spring constant of 115 n/m to use thee launcher you stretch thee band back with a balloon n it the water balloons have a mass of 1.3 kg a) if you stretch the band by 0.8 m, what elastic force will the band exert? b) with the band stretched 0.8 m, how much elastic potential energy is stored in the spring? c) if you release the band, it pushes forward. what is the kinetic energy of the balloon when it reaches the natural length of the band? d) what is the speed of the balloon when it reaches the natural length of the band?

Photons with the highest energy have the longest period

Awhite-blue star is hotter than a red star. select the best answer from the choices provided true or false