1) Presenta dos ejemplos de gráfica velocidad-tiempo en el MRUV e interpreta adecuadamente su significado, calculando la aceleración 2) Relaciona la caída libre y el tiro vertical con el MRUV y explica cómo se deducen sus ecuaciones. 3) Explica por qué el tiro horizontal es considerado como una combinación del MRU y el movimiento de caída libre

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 790 n/m. it is initially at rest on an inclined plane that is at an angle of 28 degrees with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is k = 0.14. in the initial position, where the spring is compressed by a distance of a = 0.18 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. b) if the spring pushes the block up the incline, what distance, l, in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.

You throw a small rock straight up from the edge of a highway bridge that crosses a river. the rock passes you on its way down, 7.00 s after it was thrown. what is the speed of the rock just before it reaches the water 28.0 m below the point where the rock left your hand? ignore air resistance.

Awhite-blue star is hotter than a red star. select the best answer from the choices provided true or false