Asked by Rosalia

A tennis player places a 51 kg ball machine on a frictionless surface, as shown below. The machine fires a 0.067 kg tennis ball horizontally with a velocity of 33.4 m/s toward the north. What is the final velocity of the machine?
Answered by Damon
Newton's first law
Momentum before = 0
momentum after = momentum before = 0

51 v + .067 * 33.4 = 0
Answered by Rosalia
You got 0? how?
Answered by Damon
No, the sum of those two terms is 0
Answered by Damon
51 v = - .067*33.4
v = -.067*33.4/51
Answered by Rosalia
thanks i got it(:
There are no AI answers yet. The ability to request AI answers is coming soon!