Question

Quie S-Phys 207 51 -Summer 2018 Quiz 5 I. Which of the following best deseribes wht happens in a cempletely inclastic collisin Name (a) Neither the moesentum nor the mechanical energy is consrved b) Objects stick topether after the collision, the momentum is conserval (c) Both momentum and mechanical energy are comserved (d) The mechaeical energy is cosserved, but the nommtum is not te) Non-conservative forces do not perform any work 2. A 0042kg tennis baill arproached the rackct wih the hontal speod of 12m/s After in is hi by the racket, it moves at 16 m's in the orposite directios. If the ball was in contact with the racket for 0.015 s,what was the average force exertod by the racket en the hal 2. Calculate the speed of reoil of a 2.80-kg rife when a 5.00-g bullet is fined with the initial speed of 342 mis tboth spoals ave relative to the earth)