A cannon ball is accelerated in a cannon barrel 1.3 m long. The ball leaves the barrel at 300.0 m/s. a) calculate the acceleration of the bullet b) calculate the average acceleration of the cannon ball while it's being fired.

Describe the path of a ray that approaches a mirror parallel to the principal axis.

Asolid round steel rod 6.25 mm in diameter and 375 mm long is rigidly bonded to the end of solid square brass rod 25 mm on a side and 300 mm long. the geometric axes of the bare are along the same line. an axial tensile force of 5.4 kn is applied at the extreme ends of the assembly. for steel e = 200 gpa and for brass e = 90 gpa. determine the total elongation for the assembly.

What would be the strength of earth's gravitational field at a point where an 80.0 kg astronaut would experience a 80% reduction in weight