Respuesta :
Answer
given,
mass of the tennis ball, m= 0.057 Kg
speed of the ball,v = 30 m/s
rebound speed, v' = -30 m/s
a) original momentum of ball
P = m v
P =0.057 x 30
P = 1.71 kg.m/s
b) change in momentum
P = m v - m v'
P = 0.057 x 30 - 0.057 x (-30)
P = 3.42 kg.m/s
We have use -30 m/s velocity because motion of the ball is in opposite direction.
The measurement of mass in motion is called momentum.
(a) The original momentum of the body will be 1.71 kg.m/s.
(b)The change in the momentum of the body will be 3.42kg.m/s.
What is momentum?
The measurement of mass in motion is called momentum. Momentum is equal to its mass multiplied by its velocity. Mathematically it is given as;
Momentum = Mass x Velocity
The given data in the problem is
tennis ball mass ( m)= 0.057 Kg
speed of the ball(v) = 30 m/s
rebound speed(v' )= -30 m/s
The original momentum of the body is ;
[tex]\rm {P = mv}\\\rm {P = 0.057\times30}\\\rm {P = 1.71\; kg.m/s }\\[/tex]
Hence the original momentum of the body will be 1.71 kg.m/s.
The change in the momentum of the body is given by,
Δp = mv - mv'
Δp= 0.057 x 30 - 0.057 x (-30)
ΔP = 3.42 kg.m/s
Hence the change in the momentum of the body will be 3.42kg.m/s
To learn more about the momentum refer to the link;
https://brainly.com/question/4956182
