7. M Un pateador debe patear un balón de un punto a 36.0 m (aproximadamente 40 yardas) de la meta. La mitad del público espera que el balón pase arriba del travesano, que está a una altura de 3.05 m. Cuando se patea la pelota sale del suelo con una rapidez de 20.0 m/s a un ángulo de 53.0° respecto a la horizontal. a) ¿Por cuánto libra o le falta a la pelota para pasar el travesaño mientras aún sube o baja?​

Part a constants huck finn walks at a speed of 0.60 m/s across his raft (that is, he walks perpendicular to the raft's motion what is huck's velocity (speed and direction) relative to the river bank? express your answer to three significant figures and include the appropriate units. relative to the shore)

A47.2 g block of copper whose temperature is 480 k is placed in an insulating box with a 91.8 g block of lead whose temperature is 200 k. (a) what is the equilibrium temperature of the two-block system? (b) what is the change in the internal energy of the two-block system between the initial state and the equilibrium state? (c) what is the change in the entropy of the two-block system? the heat capacities of copper and lead are 386 j/kg·k and 128 j/kg·k, respectively.

Aturntable that spins at a constant 74.0 rpm takes 3.10 s to reach this angular speed after it is turned on. find its angular acceleration (in rad/s2), assuming it to be constant, and the number of degrees it turns through while speeding up.