Four forces act on an object shown in the FBD. The object is accelerating at-3.0m/s/s on a horizontal surface. what is the mass of the object A. 1.67kg
B. 15kg
C. 0.83 kg
D. 0.42 kg

Why don't you see your reflection in water with waves or repples

Road users moving into your lane, brake lights, and abrupt changes in road surface are a. rare at night b. indicators of potential hazards c. not worth worrying about before you reach them d. no problem for experienced drivers

The magnitude of the amount of energy released by burning a fuel source, measured in energy per unit mass, is called its fuel value. note that the fuel value is the negative of the isobaric specific heat of combustion for the fuel. if all the energy obtained from burning 1.23 pounds of butane with a fuel value of 10.85 kcal/g is used to heat 128.0 kg of water at an initial temperature of 18.3 °c, what is the final temperature? note that 1 lb = 453.6 g.