A toy cannon uses a spring to project a 5.30g -soft rubber ball. The spring is originally compressed by a 5.00 cm and has aforce constant of 8.00N/m. when the cannon is fired, the ball moves15.o cm through the horizontal barrel of the cannon and thebarrel exerts a constant friction force of 0.032 N of the ball. a) with what speed does the projectile leave the barrel of the cannon?b) at what point does the ball have max speed? c) What is the maximum speed.

An object thrown vertically upward from the surface of a celestial body at a velocity of 36 m/s reaches a height of sequalsminus0.9tsquaredplus36t meters in t seconds. a. determine the velocity v of the object after t seconds. b. when does the object reach its highest point? c. what is the height of the object at the highest point? d. when does the object strike the ground? e. with what velocity does the object strike the ground? f. on what intervals is the speed increasing?

Karen is running forward at a speed of 9 m/s. she tosses her sweaty headband backward at a speed of 20 m/s. the speed of the headband, to the nearest whole number relative to a stationary observer watching karen

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?