An object with mass 50 kg moved in outer space. When it was at location <10, -26, -6> its speed was 4.5 m/s. A single constant force <210, 300, -190> N acted on the object while the object moved from location <10, -26, -6> m to location <15, -17, -9> m. Then a different single constant force <90, 200, 170> N acted on the object while the object moved from location <15, -17, -9> m to location <20, -24, -4> m. What is the speed of the object at this final location

Wo audio speakers are placed on a vertical rail. speaker a is placed at head-level while speaker b is place at some variable height, \delta yδy, above speaker a. both speakers receive simultaneous input from a sine-wave generator so the speakers each produce a pure sinusoidal sound wave with a wavelength of 0.531 meters. calculate the lowest height that speaker b can be placed above speaker a to produce a minimum of sound heard by person standing \delta x = 7.86δx=7.86 meters directly in front of speaker a.

Could someone me find the answer to this problem.

The bar of prob. 5/82 is repeated here. the ends of the 0.4-m bar remain in contact with their re- spective support surfaces. end b has a velocity of 0.5 m/s and an acceleration of 0.3 m/s2 in the di- rections shown. determine the angular accelera- tion of the bar and the acceleration of end a.