Q:

A tennis ball machine serves a ball vertically into the air from a height of 2 feet, with an initial speed of 110 feet per second. After how many seconds does the ball attain its maximum height?

A) 2.87 sec	B) 3.44 sec
C) 4.65 sec	D) 5.41 sec

Answer & Explanation Answer: B) 3.44 sec

Explanation:

It is launched vertically with an initial speed of 110 ft/sec.

It will reach maximum height when the speed drops to 0.

Vo=110 feet per second

ho=2 feet

So, h(t) = -16t^2 +110t +2

Take the derivative: h'(t) = 110 -32t

The maximum height will be at the inflection when the derivative crosses the x-axis, then h'(t)=0.

So, set h'(t)=0 and solve for t:

0 = 110 -32t

-110 = -32t

t=3.4375

t=3.44 seconds.

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Filed Under: Physics
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3 6027

Q:

Arjuna award is given for

A) Excellence in sports	B) Excellent service during emergency
C) Bravery in the battle field	D) Excellence in archery

Answer & Explanation Answer: A) Excellence in sports

Explanation:

The Arjuna Awards are given by the Ministry of Youth Affairs and Sports, Government of India to recognize outstanding achievement in sports. Started in 1961, the award carries a cash prize of ₹ 500,000, a bronze statue of Arjuna and a scroll.

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Filed Under: Sports
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5 6026

Q:

In Microsoft Word, ____________ view shows how the document would look when it is printed.

A) Web Layout	B) Normal Layout
C) Reading Layout	D) Print Layout

Answer & Explanation Answer: B) Normal Layout

Explanation:

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Filed Under: Computer
Exam Prep: Bank Exams

4 6024

Q:

Light is a ______________ wave.

A) longitudinal	B) elastic
C) transverse	D) mechanical

Answer & Explanation Answer: C) transverse

Explanation:

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Filed Under: Physics
Exam Prep: Bank Exams

0 6020

Q:

What Asks But Never Answers?

A) Teacher	B) Telephone
C) Letter	D) Owl

Answer & Explanation Answer: D) Owl

Explanation:

An owl.

"What noise does an owl make?

The sound an Owl makes, it sounds like, "Who?" to our ears.

They sounds entire lives asking the same question, but they'll never give any answers.

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Filed Under: Word Puzzles
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14 6017

Q:

Who invented fuel cells in 1839?

A) Buckminster Fuller	B) Sir William Grove
C) Sylvester Graham	D) Joyce Hall

Answer & Explanation Answer: B) Sir William Grove

Explanation:

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Filed Under: Inventions

11 6016

Q:

The main goal of Zionism was to

A) Establish a Jewish homeland	B) Assimilate Jews into other cultures
C) Fight against anti-Semitism	D) Increase Arab residents in Palestine

Answer & Explanation Answer: A) Establish a Jewish homeland

Explanation:

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Filed Under: World History
Exam Prep: Bank Exams

2 6016

Q:

Improve the bracketed part of the sentence.

Corruption has become (the day's order).

A) today's order	B) the order of the day
C) the order of today	D) no improvement

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