A toy cannon uses a spring to project a 5.26 g soft rubber ball. The spring is originally compressed by 4.93 cm and has a stiffness constant of 7.90 N/m. When it is fired, the ball moves 14.6 cm through the horizontal barrel of the cannon, and there is a constant frictional force of 0.0328 N between barrel and ball. (a) With what speed does the projectile leave the barrel of the cannon?

m/s

(b) At what point does the ball have maximum speed?

cm (from its original position)

(c) What is this maximum speed?

m/s

answer and process please

a)

b)

c)

Explanation:

From the question we are told that

Mass of soft rubber

Spring compression

Stiffness constant

Ball Distance

Frictional force

a)Generally the equation for motion of the second ball according to Newton's law is given by

b)Generally for speed to be at maximum spring force must equal frictional force

At distance

Therefore

Ball is at maximum speed at

c)Generally maximum velocity is represented mathematically as

prolly a beacuse the momentuem the car has increases while going down hill

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards