The complete combustion of a small wooden match produces approximately 512 cal of heat. how many kilojoules are produced? express your answer in terms of kilojoules.

What is the final velocity of the initial velocity of 25 and -50?

Asmall object with mass 0.200 kg swings back and forth on the lower end of a light rope that is 3.00 m long. the upper end of the rope is attached to the ceiling. as the object swings through its lowest position, where the rope is vertical, the speed of the object is 5.80 m/s. at this point in the motion, what is the tension in the rope? (use g = 9.80 m/s2.)

What determines the amount of inertia an object has