Phy 2048 - Study guides, Class notes & Summaries

A toy car is moving in a straight line while its speed is decreasing. What is the sign of its acceleration?The sign cannot be determined without more information A cart on a track is moving to the left. The cart is being pushed by an air current so that its speed is increasing as it moves to the left. Which of the following are the correct signs of the velocity v and acceleration a of the cart? Consider the right to be the positive direction. v a I. positive positive II. positive negat...

centripetal forceany net force causing uniform circular motion drag forceforce that always opposes the motion of an object in a fluid; unlike simple friction, the drag force is proportional to some function of the velocity of the object in that fluid frictionforce that opposes relative motion or attempts at motion between systems in contact inertial forceforce that has no physical origin kinetic frictionforce that opposes the motion of two systems that are in contact and moving relat...

length base standardmeter (m) time base standardsecond (s) mass base standardkilogram (kg) power base unitwatt (W) (1 kg x m^2/s^3) giga (G)10^9 mega (M)10^6 kilo (k)10^3 centi (c)10^-2