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1. ### 2 runers initially standing 2gthr runaway frm each othr with the same speed v,after20s are 360m apart.Wat isV?

2( v x 20) = 360 40 v = 360 v = 9 m/s

2 Answers · Science & Mathematics · 26/12/2012

2. ### Find the velocity and acceleration as functions of t?

s = t^3 - 3*t v(t) = ds/dt = 3t^2 - 3 a(t) = dv/dt = 6*t a(2) = 6*2 = 12 m/s^2 v = 0 = 3t^2 - 3 t^2 = 3/3 t^2 = 1 t=+1 t = - 1 has no meaning. at t=1 the acceleration is a(1) = 6*1 = 6 m/s^2

1 Answers · Science & Mathematics · 28/09/2011

3. ### A vertical spring (ignore its mass), whose spring stiffness constant is 900 N/m, is attached to a table and is?

The potential energy of the compressed spring isV = 1/2 k x^2. This potential energy all is converted into mechanical...

2 Answers · Science & Mathematics · 06/06/2011

4. ### Help with deriving a physics equation?

... Energy is zero (car starts from rest) this isv written; W = (1/2)mv^2 By definition, Power is...

1 Answers · Science & Mathematics · 18/01/2011

5. ### What movie magic (an event that the laws of physics prove could not happen) is shown in the movie Avatar?

...screen was well thought out. Remember that interstellar spacecraft (ISV Venture Star) that you saw in the first minute of the...

5 Answers · Science & Mathematics · 16/05/2010

6. ### Find the total potential at the location P.?

You can do this question by using the superposition principle for potential. The net potential thus isV=k[q/2d+q/d+(-q/d)+-q/d)]=-kq/d, where k=1/4(pi)(epsilon).Therefore, V=-9x(10^9)x2.2x(10^-6)/0.61=32.46x(10^3) V.

1 Answers · Science & Mathematics · 12/02/2008