1. An 80-kg quarterback jumps straight up in the air right before throwing a 0.43-kg football horizontally at 15 m/s. How fast will he be moving backward just after releasing the ball?2. Which of the following best describes why you can analyze this event using conservation of momentum?A. The throwing action is quick enough that external forces may be ignored. B. External forces don't act on the system during the jump. C. Conservation of momentum is always the best way to analyze motion.
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You have 80 g of 60oc water and 80 g or 10oc water. what is the final temperature when the two are mixed? explain.
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You walk 45 m to the north, then turn 90° to your right and walk another 45 m how far are you from where you originally started? a.45 m b.41 m c.85 m d.64 m
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The table shows columns that brenda uses for her notes on the properties of elements. her notes state that some elements can react to form basic compounds. where should brenda place this property in her table?
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1. An 80-kg quarterback jumps straight up in the air right before throwing a 0.43-kg football horizo...
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