Answer:
a) 1.248 rad/s
b) 13.728 m/s
c) 0.52 rad/s^2
d) 17.132m/s^2
Explanation:
You have that the angles described by a astronaut is given by:
(a) To find the angular velocity of the astronaut you use the derivative og the angle respect to time:
![\omega=\frac{d\theta}{dt}=\frac{d}{dt}[0.260t^2]=0.52t](https://tex.z-dn.net/?f=%5Comega%3D%5Cfrac%7Bd%5Ctheta%7D%7Bdt%7D%3D%5Cfrac%7Bd%7D%7Bdt%7D%5B0.260t%5E2%5D%3D0.52t)
Then, you evaluate for t=2.40 s:
(b) The linear velocity is calculated by using the following formula:
r: radius if the trajectory of the astronaut = 11.0m
You replace r and w and obtain:
(c) The tangential acceleration is:
(d) The radial acceleration is:
Answer:
Momentum is conserved.
All of the others are not conserved because of heat loss caused by deformation, etc.
When the object is lifted 6 meters of the ground , then lifted to 12 meters, it is lifted twice as high ( 6 x 2 = 12).
This means the potential energy is also doubled.
The initial force of motion and inward acting force
Answer:
50 Mph.
Explanation:
According to the National Severe Storms Laboratory, winds can really begin to cause damage when they reach <em><u>50 mph</u></em>. But here’s what happens before and after they reach that threshold, according to the Beaufort Wind Scale (showing estimated wind speeds): - at 19 to 24 mph, smaller trees begin to sway.
