A 4.00 kg cart is pushed against a spring at point A, compressing the spring (with a spring constant of 600 N/m) by 0.816 m. When the cart is released from rest, it moves to the right with a constant speed (assume there is no friction in the wheels). What is the speed of the cart after it is released at point B?

Un jugador de beisbol batea un foul recto en el aire.la pelota deja el bate con una rapidez de 120 km/h. en ausencia de resistencia del aire. ? cual sera la rapidez de la pelota cuando la atrape el catcher

An engine undergoes a cycle as shown in the diagram. during a complete cycle the work done by the gas is 28.5×103 j and the energy transferred thermally out is 99.4×103 j. there are 1.5×1024 gas molecules and they have three active degrees of freedom. 6. (6 pts) during which process(es) is energy transferred thermally into the gas? a. 1→2 b. 2→3 c. 4→1 d. 1→2 and 4→1 e. none of the above

In addition to gravity, what is the other predominant force that affects the motion of a pendulum?