Question
#4 Please answer the question neatly with steps and show all units, for good rating!
work is done by the force of is done by the force of And by the gravityn alint Don't coeservative force and that friction is not aconservative force.) 35m A 020kg tennis ball moving at 20.0m/s is soruck by aracket causing the ball to rebound in the ofthe bell? opposite direction at a speed of 30.0m's Lal What is the change in what is the impulse ofthe ball? what is the average force Boting on the ball during the collision if s high speed movie camera reveals that the bell and the racket were in contact for 1.50ms? What are the average force on und impulse of the nacket? A 0400kg mass moving to the right (or 1x dir)at 5.00m/s makes a bead-on collision with a 0.100kg at g,00nusto left (or-x dir.) If they collide elastically, detemine their separate velocities after the collision. u) What is the velocity of center oferaus fee these (Continued on Next Page)
Explanation / Answer
m1 = 0.4 kg ,
u1 = 5 m/sec
m2 = 0.1 kg ,
u2 = 8 m/sec
using equation
V = ( u1 ( m1 - m2 ) + 2 m2 u2 ) / ( m1 + m2 )
V = ( 5 X ( 0.4 - 0.1 ) + 2 X 0.1 X 8 ) / ( 0.4 + 0.1 )
V = 6.2 m/sec
