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3 years ago

10

The Dodgers are up at bat during the World Series. Joc Pederson swings his baseball bat and it collides perfectly with the baseb

all. Identify the action and reaction forces when the bat hits the baseball.
Action force:
Reaction force:

1 answer:

arsen [322]3 years ago

8 0

Answer:

According to Newton's third law, for every action force there is an equal (in size) and opposite (in direction) reaction force. ... The baseball forces the bat to the left; the bat forces the ball to the right. Together, these two forces exerted upon two different objects form the action-reaction force pair.

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What does the law of conservation of energy state?

VikaD [51]

The total amount of energy remains constant in an isolated system. It implies that energy can neither be created nor destroyed, but can be change from one form to another.

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3 years ago

What are the disadvantages of friction ?

lawyer [7]

In general? Well one example could be that if you owned an ice rink and somehow the ice had friction, you wouldn't be able to slide around on it any more to skate because the motion between one solid (your feet) and another (the ice) would increase. An effect of friction is heat, but my mixtape already fire so whats that even matter tbh.

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3 years ago

. In a high school graduating class of 100 students, 47 studied mathematics, 61 studied physics, and 25 studied both mathematics

gtnhenbr [62]

Answer:

given,

Probability of student studying math P(M)= $\dfrac{45}{100} = 0.45$

Probability of student studying physicsP(P) = $\dfrac{61}{100} = 0.61$

Probability of student studying both math and physics together P(M∩P) = $\dfrac{25}{100} = 0.25$

a) student took mathematics or physics

P(M∪P) = P(M) + P(P) - P(M∩P)

= 0.45 + 0.61 - 0.25

= 0.81

b) student did not take either of the subject

P((M∪P)') = 1 - 0.81

= 0.19

c) Student take physics but not mathematics

P(P∩M') = P(P) - P(P∩M)

= 0.61 - 0.25

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studying physics and mathematics is not mutually exclusive because we can study both the subjects.

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3 years ago

1. There is a famous intersection in Kuala Lumpur, Malaysia, where thousands of vehicles pass each hour. A 750 kg Tesla Model S

tigry1 [53]

Solution :

Let the positive $x-axis$ is along the East and the positive $y$ direction is along the north.

Given :

Mass of the Tesla car, $m_1$ = $750 \ kg$

Mass of the Ford car, $m_2 = 1250 \ kg$

Now let the initial velocity of Tesla car in the south direction be = $-v_1j$

The initial momentum of Tesla car, $p_1 = -750 \ v_1$

Let the initial velocity of Ford car in the east direction be = $v_2 \ i$

So the initial momentum of the Ford car is $p_2=1250\ v_2 \ i$

Therefore, the initial velocity of both the cars is $p_i = p_1+p_2$

$=1250 \ v_2 \ i - 750\ v_1 \ j$

Now the final velocity of both the cars is $v = 18 \ m/s$

So the vector form is :

$v = 18\cos 32\ i-18 \sin 32 \ j$

$= 15.26 \ i - 9.54 \ j$

Therefore the momentum after the accident is

$p_f=(m_1+m_2) \times v$

$=(750+1250) \times (15.26 \ i - 9.54 \ j)$

$= 30520\ i -19080\ j$

According to the law of conservation of momentum, we know

$p_i = p_f$

$1250 \ v_2 \ i - 750\ v_1 \ j$ $= 30520\ i -19080\ j$

$1250 \ v_2 = 30520$

$v_2=24.4 \ m/s$

From, $750\ v_1 = 19080$

We get, $v_1=25.4 \ m/s$

Therefore the speed of Tesla car before collision = 25.4 m/s

The speed of ford car before collision = 24.4 m/s

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OLga [1]

Answer:

C. Dark Matter

Explanation:

Dark matter is estimated to make up 90 percent of the mass of the galaxy.

The dark matter (as astronomers have come to call the invisible material) extends to a distance of at least 200,000 light-years from the center of the Galaxy.

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4 years ago