One pool ball is launched in the positive x direction with a speed of 2.5 m/s. A second, identical pool ball is launched in the negative x direction with a speed of 1.2 m/s. The two collide in a glancing collision (not head on) and the second ball is deflected directly in the positive y direction with a speed of 1.4 m/s. A. Determine the final velocity of the first ball. Give your answer in unit vector notation.
B. If the collision took place in a time interval of 0.080 s and the mass of the pool balls is 0.16 kg, determine the magnitude and direction of the force acting on the first pool ball.

a

explanation:

no diagram was provided, but i'm guessing it's the one i've attached to my answer.

here, a mechanical force turns the rod.   this generates an electric current in the coil, which powers the bulb.

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27

when heated, the valance electrons increased their speed and transferred the heat from electron to electron.   i just took the test.

there are no contact forces mentioned on the list of choices that you've provided.