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"Sarah is out playing fetch with her dog, and throws a tennis ball as far as she can. At the moment the ball reaches its maximum height, which of the following are true. You may neglect air resistance."a-You may neglect air resistance.
b-The ball's vertical acceleration is downwards
c-The ball's vertical acceleration is zero
d-The ball's vertical acceleration is upwards
e-The ball's horizontal acceleration is zero
f-The ball's horizontal acceleration is in the direction of the throw
g-The ball's horizontal acceleration is oppoite the direction of the throw
h-The ball's vertical acceleration is upwards

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Answer:

a.The ball's vertical acceleration is downwards.

e.The ball's horizontal acceleration is zero

Explanation:

We are given that Sarah throws a tennis ball as far as she can.

At the moment the ball reaches its maximum height.

We have to find the true statement if air resistance is neglect.

When air resistance is negligible then the force act on the ball is force due to gravity.

The ball throw vertically then the acceleration act on the ball is acceleration due to gravity.

The value of g=-9.8 m/square sec

It acts on the ball in downward direction .

Therefore, the ball's vertical acceleration is downwards.

The horizontal acceleration is zero because the ball reaches at maximum height then there is no force which act in horizontal direction on the ball.

Therefore, horizontal acceleration of the ball is zero.

Hence, option a and e are true.

The statement B is correct which states that "The ball's vertical acceleration is downwards".

The statement E is correct which states that "The ball's horizontal acceleration is zero".

How do you find out which statement is true?

The given condition is that Sarah throws a tennis ball as far as she can. Also given that the air resistance is negligible.

Let consider that the ball is thrown vertically. In this case, the force on the ball is the force due to gravitational acceleration on the ball.

Hence the vertical acceleration on the ball is equivalent to the gravitational acceleration of 9.8 m/s2. The vertical force acting on the ball will be in a downward direction because this is the force due to gravity.

Hence the statement B is correct which states that "The ball's vertical acceleration is downwards".

When the ball reaches its maximum height, the horizontal acceleration will be zero on the ball, as there is no force acting on the ball in the horizontal direction.

Hence the statement E is correct which states that "The ball's horizontal acceleration is zero".

To know more about the acceleration, follow the link given below.

https://brainly.com/question/3388038.

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