una onda sonora se propaga a travez del vidrio a 5500 m/s, la longitud de onda vale 11 m. Calcula el periodo y la frecuencia

How are calculation for velocity and speed different

An open cart is moving along a straight frictionless horizontal track. when rain starts falling vertically into the cart, what happens to the speed of the cart?

How many meters will a car travel if its speed is 45 m/s in an interval of 11 seconds? question 2 options: a) 450 meters b) 495 meters c) 4.09 meters d) 498 meters