một vật dao động điều hòa với phương trình x= 4cos(πt+π/6) . tìm tất cả những thời điểm vật đi qua vị trí cân bằng

How would a small bar magnet be oriented when placed at position x?

Ben (55kg) is standing on very slippery ice when junior (25kg) bumps into him. junior was moving at a speed of 8 m/s before the collision and ben and junior embrace after the collision. find the speed of ben and junior as they move across the ice after the collision. give the answer in m/s. describe the work you did to get the answer.

The chart shows daniela’s run through her race. what is her velocity? 1.5 m/s 2 m/s 2.5 m/s 5 m/s