Mechanics | Relativity Answers

If the coefficient of kinetic friction between the 150lb crate and the ground is us=0.21. Determine the speed of the crate when t=4s. The crate starts from rest and is towed by the 100lb force.

Explain the term RESTITUTION as related to impact

Differentiate between elastic and plastic impact

A load of mass M1 = 2.3kg is attached to a mass M2=4.25 with a light inextensible string hanging over a frictionless pulley.If the two loads hang freely in air what is the acceleration of m1 upwards

A race car collided with race track wall.Just before the collision,he is travelling at speed v1= 70m/s along a straight line at 30 degrees from the wall. Just after collision he is travelling at speed 50m/s along a straight line at 10 degree from the wall.His mass is 80kg.(a) the impulse J of the driver due to collision
(b)the collision last for 14ms.What is the magnitude of the average force on the driver during collision

find the time taken by sunlight to reach the ground if the distance between the sun and the earth is 1.5*10^8 km.velocity of light is 3*10^8 ms^-1

In such an experiment, a brass wire of diameter 9.50 x 10^-4 m is used. If the young modulus for brass is 9.86 x 10^10 Nm^-2, find the greatest force which could be use to keep within the limitation.

8.Tarzan, mass 85kg, swings down from a tree limb. His feet touch the ground 4.0 m below the limb. How fast was Tarzan moving when he hit the ground?

7. An 80.0 kg student running at 3.5 m/s grabs onto a rope that it hanging vertically.
a. How much kinetic energy does the student have prior to grabbing the rope?
b. How high will the student swing?