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1. ### If a ball thrown with a velocity11.2 km/sec .What will happen?

11.2 km/sec is the "escape velocity" from the surface of the earth. When...the surface, where there's no air, and THEN throw it at 11.2 km/sec, it would fly away from the earth forever. BUT there's a catch...

8 Answers · Science & Mathematics · 23/06/2007

2. ### Trigonometry Help! How do I simplify sec^2/(tan+cot)?

A) sec^2/(tan+cot) Solution: (1/cos^2) / ((sin/cos)+(cos/sin)) (1/cos^2...1+sin) / {cos(1+sin)} 2/cos 2sec ANSWER C) (tan^2/ (1+sec)) cos*sec. Since cos*sec=1 (tan^2)/ (1+sec) (sec^2-1)/ (1+sec...

1 Answers · Science & Mathematics · 10/11/2011

3. ### convert m/s to rads/sec?

You mean radians/sec? It depends on how far you are from the center that you ... if v is measured in (same distance units as r) per sec. If the motion is not circular, then the speed is (v/r)*sin θ...

2 Answers · Science & Mathematics · 30/07/2010

4. ### the unit defining a value... such as a car goes 5 km/sec... why is km on top?

Km/sec, Amps/meter, meter / second, meter/ second^2 kg / m^3, N... all these units we have a symbol [/]. [/] means per. Km/sec means kilometer per second. Amps/meter means ampere...

2 Answers · Science & Mathematics · 25/11/2009

5. ### How much time does it take a bullet to go 50ft at 500ft/sec?

correct s=d/t since s is 500 ft/sec in this case, and d is 50 ft, we get 500 ft/sec = 50 ft/ t lets...1 = 50 so 500 t feet/sec = 60 ft divide both sides by 500 ft/sec and get 500 t feet/sec / (500 ft/sec) =50 ft / (500 ft/sec) 500 feet...

3 Answers · Science & Mathematics · 07/05/2011

6. ### why is sec(-3pi) equal to -1 and not 0?

sec(-3π) = 1/cos(-3π) --> that you should just know. sec(x) = 1/cos(x) cos(-3π) = -1 1/-1 = -1 The negative really doesn't matter...

2 Answers · Science & Mathematics · 04/03/2013

7. ### From what height must a ball be tossed for it to strike the ground with a velocity of -136 ft/sec?

Assume acceleration due to gravity is -32 ft/sec^2 v^2 = u^2 + 2as but for simplicity I am... zero). We know the initial velocity is 96 ft/sec. Again for ease of maths we're going...

3 Answers · Science & Mathematics · 27/07/2012

8. ### Suppose a ball is thrown upward from a height of 5 ft with an initial velocity of 30 ft/sec.?

...= -16t^2+vt+h With v equalling the initial velocity (30 ft/sec) h equalling the initial height (5 feet) t equalling...

3 Answers · Science & Mathematics · 28/01/2008

9. ### A cannon is launched. It reaches a max height of 11, an initial velocity of 0 and lands at 1.3 secs.?

...of the answers are easy, for example the time to range is 1.3 sec, they give you that one. The time for max height would be one half of that or...

3 Answers · Science & Mathematics · 19/01/2012

10. ### a body in uniform acceleration covers 75m in6th sec 115m in 11th sec . Find displacement in 16th sec?

from the 6th sec to 11th sec is 5 seconds. Find acceleration Xf...230 = 25a a = 9.2 m/s^2 assume the question ask for the displacement from 6th sec to 16th sec so from 6th sec to 16th sec is 10 ...

3 Answers · Science & Mathematics · 13/08/2007