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MArishka [77]
4 years ago
12

During a baseball game, a batter hits a high

Physics
2 answers:
SashulF [63]4 years ago
8 0

Answer:

The maximum height of the ball is 36.65 m.

Explanation:

Given that,

Time = 5.47 sec

The ball must be at top point in half of total time.

We need to calculate the height

Using equation of motion

s = ut+\dfrac{1}{2}gt^2

Where, s = height

u = initial velocity

g = acceleration due to gravity

Put the value in the equation

s=0+\dfrac{1}{2}\times9.8\times(\dfrac{5.47}{2})^2

s=36.65\ m

Hence, The maximum height of the ball is 36.65 m.

erastovalidia [21]4 years ago
7 0

Answer:

53.60600 m

Explanation:

5.47 x 9.8

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3 years ago
in a closed system three objects have the following momentum: 11 kg* m/s, -65 kg*m/s and -100 kg m/s. the objects collide and mo
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Explanation:

The momentum of the three objects are as follow :

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Before collision, the momentum of the system is :

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After collison, they move together. It means it is a case of inelastic collision. In this type of collision, the momentum of the system remains conserved.

It would mean that, after collision, momentum of the system is equal to the initial momentum.

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3 years ago
Which compound has ionic bonding? A. Cl2 B. HF C. CaO D. NO2
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the answer is CaO because that's what my homework says is correct


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10. Which of these devices is also referred to as a'key'?
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Answer:

Electric switch is commonly known as the key of an electric circuit.

3 0
2 years ago
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A girl is shown at position A on a swing when the seat is directly below the support bar. The seat is then at height A as shown
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Answer:

<u></u>

  • <u>1. The potential energy of the swing is the greatest at the position B.</u>

  • <u>2. As the swing moves from point B to point A, the kinetic energy is increasing.</u>

Explanation:

Even though the syntax of the text is not completely clear, likely because it accompanies a drawing that is not included, it results clear that the posittion A is where the seat is at the lowest position, and the position B is upper.

The gravitational <em>potential energy </em>is directly proportional to the height of the objects with respect to some reference altitude. Thus, when the seat is at the position A the swing has the smallest potential energy and when the seat is at the <em>position B the swing has the greatest potential energy.</em>

Regarding the forms of energy, as the swing moves from point B to point A, it is going downward, gaining kinetic energy (speed) at the expense of the potential energy (losing altitude). When the seat passes by the position A, the kinetic energy is maximum and the potential energy is miminum. Then the seat starts to gain altitude again, losing the kinetic energy and gaining potential energy, up to it gets to the other end,

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