Homework Statement
A block moves at 5 m/s in the positive x direction and hits an identical block, initially at rest. A small amount of gunpowder had been placed on one of the blocks. The explosion does not harm the blocks but it doubles their total kinetic energy. After the explosion, the...
Homework Statement
A car traveling at a constant speed of 20 m/s that is initially traveling due northwest rounds a corner so that after 10 s, the car is traveling due northeast. What are the magnitude and direction of the car's average acceleration during this interval of time? Be sure to...
I don't understand why my problem has not been answered yet while others after me have . . I have given you all the required information. Please let me know anything else you may need. Thanks.
Homework Statement
Suppose the x coordinate of a pie is given as a function of time t by
x(t) = (u^2)(t^2) + 3ut,
where u is independent of t. Calculate (dx/dt) and (dx/du). Also, whihc one of the above derivatives (if either) give you vx, the x component of the pie's velocity...
I would like to know if I am going in the correct direction with this or not. . .I don't understand why other questions posted after mine are already answered but my question isn't . . . . what more must I do?
Homework Statement
As its coming back to Earth from orbit, the space shuttle enters the atmosphere traveling at a speed of roughly 8000 m/s. Just before it lands, its speed has already decreased to about 100 m/s. The gravitational potential energy of the earth-shuttle system has also...
Homework Statement
Imagine that a treasure chest of mass m=100kg falls to the ground from a jet flying at an altitude of 35 km.
(a) calculate the chest's initial potential energy according to formula V(z)=mgz
(b) caculate the chest's initial potential energy according to formula...
Homework Statement
Imagine that you are prospecting for rare metals on a sperical asteroid composed mostly of iron (which density is 7800 kg/m^3). The radius of the asteroid is about 4.5 km. You've left your spaceship in a circular orbit 400 meters above the asteroid's surface and gone down to...
Okay . .I understand now that I look at it again. Thank you.
for north of west:
construct triangle with opposite 25 and adjacent 10
for above horizontal:
construct triangle with opposite 5 and adjacent 10
Homework Statement
A jetliner takes off from LA. after 5 min, the jet has an altitude of 5 km above the level of the airport and is 25 km west and 10 km north of the airport. What are the magnitude and the diretion of its displacement during this time interval? Specify the direction by...
Homework Statement
a snow-covered ski slope makes an angle of 35 degrees with the horizontal. when a ski jumper plummets onto the hill, a parcel of splashed snow projects to a maximum position of 5 m at 20 degrees from the vertical in the uphill direction. find the components of its maximum...
Homework Statement
A boat leaves San Pedro and travels 35 km 15* west of south before its engine dies. You left San Pedro earlier in the morning and have traveled 42 km 23* south of west by the time the first boat's distress all reaches you. How far from and in what direction is the first boat...