3. Ball A and ball B roll, in the same direction, with the following masses and initial speeds: mA = 5 kg, mB = 10 kg, vA = 4 m/s and vB = 2 m/s. After ball A collides with ball B it moves in the opposite direction with a speed of vA = 1 m/s. Determine the direction and speed of ball B after the collision.

Which type of bond is found between the atoms of a molecule? a. metallic b. delocalized electron c. covalent d. ionic

Arunner is training for an upcoming marathon by running around a 100-m-diameter circular track at constant speed. let a coordinate system have its origin at the center of the circle with the x-axis pointing east and the y-axis north. the runner starts at (x, y) = (50 m, 0 m) and runs 2.5 times around the track in a clockwise direction.

The star betelgeuse is about 600 light-years away. if it explodes tonight, a. we'll know because debris from the explosion will rain down on us from space.b. we'll know it immediately because it will be brighter than the full moon in the sky.c. we won't know about it until 600 years from now.d. none of the above.