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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

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

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

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

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

**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

### 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

...= -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 · 27/01/2008

...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

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

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