6. The figure shows a student pushing a 1.22 kg box across a frictionless floor a distance of 5.0 m by applying a force of 30.0 N.
What is the work done on the box by the two forces, Fn and Fa , as it
is pushed 5.0 m along the floor?
F = 12.0 N
F=30.0 N
5 m
A. Work by Fn = 0 Joules Work by Fa = 0 Joules
B. Work by Fn = 0 Joules Work by Fa = 150 Joules
C. Work by Fn = 60 Joules Work by Fa = 0 Joules
D. Work by Fn = 60 Joules Work by Fa = 150 Joules

The primary benefit of taking into account a child's interests while selecting exercise activities is that the child will a. play more willing with others b. succeed at their favorite activity c. allow parents to relax afterwards d. gain motivation to exercise select the best answer from the choices provided.

Free runners jump long distances and land on the ground or a wall. how do they apply newton’s second law to lessen the force of impact?

Acylinder with a movable piston contains 11.7 moles of a monatomic ideal gas at a pressure of 1.32×10^5 pa. the gas is initially at a temperature of 300 k. an electric heater adds 43200 j of energy into the gas while the piston moves in such a way that the pressure remains constant. cp=20.79 j k^−1 mol^−1 for a monatomic ideal gas, and that the number of gas molecules is equal to avogadro's number (6.022×10^23) times the number of moles of the gas. (a) what is the temperature of the gas after the energy is added? (b) what is the change in volume of the gas? (c) how much work is done by the gas during this process?