Incomplete question as the mass of baseball is missing.I have assume 0.2kg mass of baseball.So complete question is:
A baseball has mass 0.2 kg.If the velocity of a pitched ball has a magnitude of 44.5 m/sm/s and the batted ball's velocity is 55.5 m/sm/s in the opposite direction, find the magnitude of the change in momentum of the ball and of the impulse applied to it by the bat.
Answer:
ΔP=20 kg.m/s
Explanation:
Given data
Mass m=0.2 kg
Initial speed Vi=-44.5m/s
Final speed Vf=55.5 m/s
Required
Change in momentum ΔP
Solution
First we take the batted balls velocity as the final velocity and its direction is the positive direction and we take the pitched balls velocity as the initial velocity and so its direction will be negative direction.So we have:
[tex]v_{i}=-44.5m/s\\v_{f}=55.5m/s[/tex]
Now we need to find the initial momentum
So
[tex]P_{1}=m*v_{i}[/tex]
Substitute the given values
[tex]P_{1}=(0.2kg)(-44.5m/s)\\P_{1}=-8.9kg.m/s[/tex]
Now for final momentum
[tex]P_{2}=mv_{f}\\P_{2}=(0.2kg)(55.5m/s)\\P_{2}=11.1kg.m/s[/tex]
So the change in momentum is given as:
ΔP=P₂-P₁
[tex]=[(11.1kg.m/s)-(-8.9kg.m/s)]\\=20kg.m/s[/tex]
ΔP=20 kg.m/s
The change in the momentum of the ball is 14.5 kgm/s.
The impulse experienced by the ball is 14.5 kgm/s.
The given parameters;
The change in the momentum of the ball is calculated as follows;
[tex]\Delta P = mv_1 - mv_2\\\\\Delta P = m(v_1 - v_2)\\\\\Delta P = 0.145(44.5 - - 55.5)\\\\\Delta P = 14.5 \ kgm/s[/tex]
The impulse experienced by the ball is equal to change in momentum of the ball.
[tex]J = \Delta P = 14.5 \ kgm/s[/tex]
"Your question is not complete, it seems to be missing the following information;"
If the velocity of a pitched ball of 0.145 kg has a magnitude of 44.5 m/sm/s and the batted ball's velocity is 55.5 m/sm/s in the opposite direction, find the magnitude of the change in momentum of the ball and of the impulse applied to it by the bat.
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