Mechanics | Relativity Answers

A delivery man covers his assigned route by traveling 8m blocks West, 10.0m blocks North, and then 21m blocks East. Calculate his resultant displacement?

A man starts with an initial velocity of 3.50 m/s and accelerates for a distance of 205 m over 28.7s. What is the acceleration of the man?

A solid cylinder of mass 4kg and radius 40cm rotates about its axis with a frequency of 1/pi what is its rotational kinetic energy?

A solid cylinder of mas 4kg and radius 40cm rotates about its axis with a frequency of 1/pi what is its rotational kinetic energy?

A solid cylinder of mas 4kg and radius 40cm rotates about its axis with a frequency of 1/pi what is its rotational kinetic energy?

. A helium-filled balloon rises until its density becomes the

same as that of the surrounding air. If a sealed submarine

begins to sink, will it go all the way to the bottom of the

ocean or will it stop when its density becomes the same as

that of the surrounding water?

3. How much work must be done to a proton to accelerate it from rest to 0.998c.

4. A person on Earth observes a space ship approaching from the right with a velocity of 0.75c and a rocket ship approaching from the left at 0.50c. What is the relative velocity of the two ships as measured by a passenger in each of them?

9. A rocket ship has a mass of 1.50 x 105 kg. Its relativistic momentum is 3.00 x 1012 kg•m/s. How fast is the rocket ship traveling?

10. How fast would a meter stick be moving so that its length will be observed to shrink to half its original length?

A child pulls on a rope attached to a sled with a force of 60 N. The

rope makes an angle of 40° to the ground. (a) Compute the

effective value of the pull tending to move the sled along the

ground. (b) Compute the force tending to lift the sled vertically.

A flat, circular metal disk of uniform thickness has a radius of 3.20 cm. A hole is drilled in the disk that is 1.60 cm in radius. The hole is tangent to one side of the disk. Where r = 3.20.Where is the x-component of the CM of the disk now that the hole has been drilled?