Mechanics | Relativity Answers

An air traffic controller notices that one aircraft approaches the airport at an altitude 2500 m,horizontal distance 120 km and a bearing 20 degrees south of east. A second aircraft is at an altitude 3500 m,horizontal distance 110 km,and bearing 25 degrees south of east.Find the displacement vector from the first aircraft to the second in terms of altitude,horizontal distance and bearing.

A particle is moving along a line parallel to x-axis at a distance d from x-axis, with constant speed u. Find its radial acceleration using polar coordinates

A particle is moving along a straight line parallel to the x axis at a distance 'd' away from it. It moves with a constant velocity 'u'. At a point (x,d)what is the velocity along r̂ ?
1.uy /(x^2+y^2)^0.5
2.u
3.ux/y
4.ux/(x^2+y^2)^0.5

state the law of conservation of angular momentum applied

what is the greatest acceleration that can be generated by a runner if the coefficient static friction between shoes and road is 0.95?

A block of mass 2*1000g moving at 2*100m/s collides with another block of same mass at rest. if actual loss of K.E. is half of the maximum then the coefficient of restitution is

A BALL A OF MASS m MOVING WITH A VELOCITY u1 collides HEAD ON WITH ANOTHER BALL B OF SIMILAR MASS MOVING WITH VELOCITY u2 . the COEFFICIENT OF RESTITUTION IS e . THE RATIO OF FINAL & INITIAL VELOCITIES OF THE BALL A IS

a moving body A of mass 5kg collides with a stationary body B. If both the bodies move togeather with a speed of 1/3 that of the body A after collision, mass of B is

A car travels in south west direction for a distance of 100 km and then turns north west and goes 200 km.What is the displacement of the car in North,South and West direction? Find the net displacement of the car.

a 1200 kg car and a 2400 kg car are lifted to the same height at a constant speed in an auto service station. Lifting the more massive car requires _____ work

a. less b. the same c. twice as much d. four times as much

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