Mechanics | Relativity Answers

A 90.0 kg fullback running east with a speed of 5.00 m/s is tackled by a 95.0 kg opponent running north with a speed of 3.00 m/s. (a) Explain why the successful tackle constitutes a perfectly inelastic collision. (b) Calculate the velocity of the players immediately after the tackle. (c) Determine the mechanical energy that disappears as a result of the collision. Account for the missing energy

An object of mass 3.00 Kg, moving with an initial velocity of 5.00 i m/s, collides with and sticks to an object of mass 2.00 kg with an initial velocity -3.00 j m/s. Find the final velocity of the coposite object.

What is mearnt by (a) stable equilibrium and (b) unstable equilibrium! Give one example each

An object of mass m = 0.500 kg is suspended from the ceiling of an accelerating truck. Taking a = 3.00 m/s 2 , find
(a) the angle u that the string makes with the vertical and
(b) the tension T in the string.

Explain about speed of light.

Hello. Hope all is well. For Question #91240, I understand most of the solution except the final time calculation. Would you please explain why (t1) is multiplied by 2, when (t2) is not? I feel like the answer should be 9.3 s instead of 10.8 s.

find moment of inertia of a circular ring about x-axis.

a 100-lb body is attached to a rope and is pulled upward with a force of 150 lb. what is the acceleration of the body?

In a Young’s double slit interference experiment, the slits are at a distance 2L from each
other and the screen is at a distance D from the slits. If a glass slab of refractive index 
and thickness d is placed in the path of one of the beams, the minimum value of d for
the central fringe to be dark is