Explain why the y-component of acceleration is constant for an object in projectile motion. a. the y -component of acceleration increases, and it changes as the velocity changes. b. the x-component of acceleration increases, and it changes as the velocity changes. c. the y- component of acceleration is gravity, and it is always - 9.81 m/s ^ 2 d. the y-component of acceleration decreases , and it changes as the velocity changes

Calculate the mass of an object that has a momentum of 100kg x m/sec and velocity of 4 m/sec

Astudent creates a model of a closed ecosystem by filling a glass tank half full with water, then adding 10 snails and two small aquatic plants. the next day, all the snails are dead. what is the most likely cause of their death?

Imagine that you have two balloons (or, better yet, actually inflate two balloons, if possible). create static electricity around one of the balloons by rubbing it against your hair or your sweater and then bring that balloon close to the other balloon, which has not been charged. try this with at least one other object—and for variety in the discussion, avoid using an object already described by your classmates. then, for your initial post to the discussion, answer the following questions: what happened with the two balloons?