A railway truck A of mass 2000kg moves westwards with a velocity of 3m. s. it collides with a stationery truck B of mass 1200kg, loaded with electronic equipment of mass 300kg. The two trucks combined after the collision. Ignore the effects of friction. 7.1 wite down magnitude and direction of the 'reaction force ' to the weight of truck A. 7.2 calculate the velocity of truck B after the collision 7.3 calculate the magnitude of the force that truck A exerts on truck B if the collision lasts for 0.5s

Aforklift raises a 1,020 n crate 3.50 m up to a shelf. how much work is done by the forklift on the crate? the forklift does j of work on the crate.

Which articulations allow for greatest range of motion?

Athin nonconducting rod with a uniform distribution of positive charge q is bent into a circle of radius r. the central perpendicular axis through the ring is a z-axis, with the origin at the center of the ring. a) what is the magnitude of the electric field due to the rod at z = 0? n/c (b) what is the magnitude of the electric field due to the rod at z = infinity? n/c (c) in terms of r, at what positive value of z is that magnitude maximum? r (d) if r = 4.00 cm and q = 9.00 µc, what is the maximum magnitude? n/c