Abody of mass 2 kg is moving in the positive x-direction with a speed of 4 m/s collides head on with an another body of mass 3 kg moving in the negative x-direction with a speed of 1 m/s . during collision a loud sound is heard and they both start moving together . the sound energy cannot be greater than :
a) 12 j
b) 14 j
c) 15 j
d) 17.5 j

Темирказык жулдызынын жулдыздык шамасы 2,02, ал веганын жулдыздык шамасы 0,03. осылардын кайсысы жарык жане неше есе жарык?

Two manned satellites approaching one another at a relative speed of 0.550 m/s intend to dock. the first has a mass of 2.50 ✕ 103 kg, and the second a mass of 7.50 ✕ 103 kg. assume that the positive direction is directed from the second satellite towards the first satellite. (a) calculate the final velocity after docking, in the frame of reference in which the first satellite was originally at rest.(b) what is the loss of kinetic energy in this inelastic collision? (c) repeat both parts, in the frame of reference in which the second satellite was originally at rest. final velocity(d) loss of kinetic energy = ?

Scientific models are based on current knowledge, which can limit their effectiveness when new discoveries are made.