A 0.311 kg tennis racket moving 30.3 m/s east makes an elastic collision
with a 0.0570 kg ball moving 19.2 m/s
west. Find the velocity of the tennis
racket after the collision.
(Unit = m/s)

Need asap ‼️ 20 pts which gravitational force field diagram is drawn correctly? (answers in pictures below)

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.

To a of 4 x hz is 1. 0. mm nm nm