A 0.2-kg softball is traveling to the left toward home plate with an initial velocity of Vi = -40 m/s. After getting hit by a bat, it is traveling with a final velocity of yf= +50
m/s to the right. What is the softball's overall change in momentum? (Watch those
negative signs!)

Astone dropped into a well is heard to strike the water after 8seconds. find the depth of the well if the velocity of sound is 350m/s

Alarge box of mass m is pulled across a horizontal frictionless surface by a horizontal rope with tension t. a small box of mass m sits on top of the large box. the coefficients of static and

According to valence bond theory, which orbitals overlap in the formation of the bond in hf according to valence bond theory, which orbitals overlap in the formation of the bond in hf 2s on h and 2p on f 1s on h and 2s on f 1s on h and 1p on f 1s on h and 2p on f 1s on h and 3p on f