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1. ### A ball falls out of an airplane window. the airplane is 500m above the ground. find the kinetic energy and spe?

From your problem statement it sounds like you're only interested in the vertical dimension, and you also need to neglect the effect of aerodynamic drag. With these assumptions, right before the ball hits the ground it has converted...

2 Answers · Science & Mathematics · 15/07/2012

2. ### An astronaut traveling forward at 0.87c holds a meterstick in spear -like fashion. The astronaut sees the spe?

1 meter. .

2 Answers · Science & Mathematics · 18/12/2010

3. ### A 83-kg fisherman in a 136-kg boat throws a package of mass m = 15 kg horizontally toward the right with a spe?

AN 83.....? (83 + 136) = 219kg. (15 x 4.4)/219 = 0.3m/sec., left.

2 Answers · Science & Mathematics · 05/10/2012

4. ### A 10-kg cylinder rolls without slipping on a rough surface. At an instant when its center of gravity has a spe?

(a) translational kinetic energy = (1/2)*m*(v^2) =(1/2)*10*(10^2) =500J (b) rotational kinetic energy =(1/2)*I*(w^2) w-angular velocity(omega), I-moment of inertia =(1/2)*(2/5*m*r^2)(w^2...

2 Answers · Science & Mathematics · 25/12/2012

5. ### Tarzan swings on a 30.0 m long vine initially inclined at an angle of 32.0° with the vertical. What is his spe

960mph. lol jk

2 Answers · Science & Mathematics · 10/08/2008

6. ### A friend of yours is loudly singing a single note at 400 while racing toward you at 24.5 on a day when the spe?

Don't forget to supply what units you are working with! (342 + 24.5) = apparent V of 366.5m/sec. a) (366.5/342) x 400 = 428.655Hz. b) 428.655Hz.

2 Answers · Science & Mathematics · 30/01/2013

7. ### (a) What is the momentum of a garbage truck that is 1.20×104 kg and is moving at 10.0 m/s ? (b) At what spe?

(a) p = mv = 1.2e5 kg·m/s (b) v = p / m = 1.2e5kg·m/s / 8kg = 1.5e4 m/s = 15 km/s

1 Answers · Science & Mathematics · 24/06/2016

8. ### The earth has a radius of 6.38 x 106 m and turns on its axis once every 23.9 h. (a) What is the tangential spe?

OK, simple V=D/T. Velocity = Distance/Time D = 2 x pi x r . T (in seconds) is 23.9 x 3600 (seconds in an hour) Since everything is nice an linear - the R for part be needs to be 1/3 of...

1 Answers · Science & Mathematics · 05/07/2013

9. ### (a) What is the momentum of a garbage truck that is 1.20×104 kg and is moving at 10.0 m/s ? (b) At what spe?

(a) p = mv = 1.2e5 kg·m/s (b) v = p / m = 1.2e5kg·m/s / 8kg = 1.5e4 m/s = 15 km/s

1 Answers · Science & Mathematics · 14/10/2013

10. ### A croquet mallet delivers an impulse of 9.87 N s to a 0.54- kg croquet ball initially at rest. What is the spe?

By I = ∆P = m∆v =>9.87 = 0.54 x ∆v =>∆v = 18.28 m/s

1 Answers · Science & Mathematics · 21/10/2013