You wish to push a cart across a frictionless surface, so you apply 20.0 N of net force for a period of 3.0 seconds. As a result the cart goes from 0 m/s to 2.3 m/s. What is the mass of the cart? Show your work.

What is the primary force that suspension bridges use cables to hold their spans up? a. tension force b. resistance force c. normal force d. elastic force e. applied force

The least penetrating form of radiation is

A980-kg sports car collides into the rear end of a 2300-kg suv stopped at a red light. the bumpers lock, the brakes are locked, and the two cars skid forward 2.6m before stopping.the police officer, estimating the coefficient of kinetic friction between tires and road to be 0.80, calculates the speed of the sports car at impact. what was that speed?