8. Una fuerza de 100 N actúa sobre un cuerpo que se desplaza a lo largo de
un plano horizontal en la misma dirección del movimiento. Si el cuerpo se
desplaza 20 m. (Recuerda que si es en un plano horizontal el ángulo es cero)
¿Cuál es el trabajo realizado por dicha fuerza?

The great sandini is a 60.0-kg circus performer who is shot from a cannon (actually a spring gun). you don’t find many men of his caliber, so you him design a new gun. this new gun has a very large spring with a very small mass and a force constant of 1100 n/m that he will compress with a force of 4400 n. the inside of the gun barrel is coated with teflon, so the average friction force will be only 40.0 n during the 4.00 m he moves in the barrel. at what speed will he emerge from the end of the barrel, 2.50 m above his initial rest position?