Physics 1603 Exam Chapter 5-7 Review Questions and Answers 2023

An object can move even when no force acts on it - -True -If an object isn't moving, no external forces act on it - -False -If a single force acts on an object, the object accelerates - -True -If an object accelerates, at least one force is acting on it - -True -If an object isn't accelerating, no external force is acting on it - -False -If the net force acting on an object is in the positive x-direction, the object moves only in the positive x-direction - -False -No force of gravity acts on an astronaut in an orbiting space station - -false -At three Earth radii from the center of Earth, the acceleration of gravity is 1/9 its surface value - -true -A small sports car collides head-on with a massive truck. Which vehicle experiences the greater impact force? - -Neither, the force is the same for both -A small sports car collides head-on with a massive truck. Which vehicle experiences the greater acceleration? - -The car -Unless acted on by an external force, an object at rest will ______ at rest and an object in motion will ________ in motion with _________ velocity - -remain continue constant -See photo - - -A block slides at constant speed down a ramp while acted on by three forces: its weight, the normal force, and kinetic friction. The combined net work done by all three forces on the block