A 82.3 kg linebacker "X" is running at 7.79 m/s directly toward the sideline of a football field. He tackles a 89.1 kg running back "O" moving at 8.83 m/s straight toward the goal line, perpendicular to the orginal direction of the linebacker. As a result of the collision both players momentarily leave the ground and go out-of-bounds at an angle relative to the sideline. (a) What is the common speed of the players , immediately after their impact?
(b) What is thier angle, relative to the sideline?

Ahypothesis is? close agreement by competent observers of observations of the same phenomena. a guess that has been tested over and over again and always found to be true. an educated guess that has yet to be proven by experiment. the long side of a right triangle. a synthesis of a large collection of information that includes guesses.

Your target variable is δf, the magnitude of the difference in frequency between the waves emitted from the sonar device and the waves received by the device after reflecting off the whale. write an expression for δf in terms of the relevant frequencies using the subscript notation introduced above.

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?