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Kobotan [32]
3 years ago
11

A baseball is hit with a bat and, as a result, its direction is completely reversed and its speed is doubled. If the actual cont

act with the bat lasts 0.45 s, what is the ratio of the magnitude of the average acceleration of the ball to its original speed
Mathematics
1 answer:
alexandr402 [8]3 years ago
6 0

Answer:

6.7 /s.

Step-by-step explanation:

Initial velocity = u m/s

From the question, final velocity, v = - 2u m/s

Note - (the minus sign indicates that the direction was reversed and doubled)

t = 0.45

From equation of motion,

v = u + at

Acceleration, a = (v - u)/t

= (-2u - u)/0.45

= - 3u/0.45

Acceleration, a/Original speed, u = 3/0.45

= 6.7 /s

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Lera25 [3.4K]

Answer:

When the diameter is given you just take half of it so simply put what is half of 16pi and it will give your answer. :)

Step-by-step explanation:

7 0
3 years ago
What is the ratio of 96:132 in simplest form?
Aleks04 [339]
Treat ast fraction
96/132
divide by 2,3,5,7 or factors starting from 2
96/2=48
132/2=66

48/66
divide 2
48/2=24
66/2=33

24/33
divide 3 since cannot divide 33 by 2
24/3=8
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4 0
3 years ago
Read 2 more answers
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3 0
2 years ago
Find the difference in simplest form. <br> 2b/b^2-2b+1 - 2/b^2-2b+1
kolezko [41]
1) factor the denominators: 2b/(b-1)2 - 2/ (b-1)2
2) MAKE SURE YOU HAVE A COMMON DENOMINATOR
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7 0
3 years ago
William and Stephanie are playing a rather dangerous game of catch on the rooftops of skyscrapers in downtown Chicago. William i
olasank [31]
The question involves the concept & equations associated with projectile motion.

Given:
y₁ = 1130 ft
v₁ = +46 ft/s (note positive sign indicates upwards direction)
t = 6.0 s
g = acceleration due to gravity (assumed constant for simplicity) = -32.2 ft/s²


Of the possible equations of motion, the one we'll find useful is:

y₂ = y₁ + v₁t + 1/2gt²

We can just plug and chug to define the equation of motion:

<u><em>y = (1130 ft) + (46 ft/s)t + 1/2(-32.2 ft/s²)t²</em></u>


<em>(note: if you were to calculate y using t = 6.0 s, you'd find that y = 826.4 ft, instead of 830 ft exactly because of some rounding of g and/or the initial velocity)</em>

7 0
3 years ago
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