A body of mass 2kg initially at rest moves under the action of applied horizontal force of 7N on a table with coefficent of kinetic friction 0.1 calculate work done by the applied force in 10sec. work done by friction in 10sec. work done by the net force on the body in 10sec. change in kinetic energy of the body in 10sec.​

What is the coefficient of kinetic friction μk between the block and the tabletop?

The illuminance of a surface varies inversely with the square of its distance from the light source. if the illuminance of a surface is 120 lumens per square meter when its distance from a certain light source is 6 meters, by how many meters should the distance of the surface from the source be increased to reduce its illuminance to 30 lumens per square meter?

What is part of a line has one endpoint and continues in one direction?