Abuilding is being knocked down with a wrecking ball, which is a big metal sphere that swings on a 15-m-long cable. you are (unwisely! ) standing directly beneath the point from which the wrecking ball is hung when you notice that the ball has just been released and is swinging directly toward you. how much time do you have to move out of the way?

What happens to an isotope during radioactive decay?

What is the measure of how much matter is in an object and that can be measured using a balance? a. height b. volume c. weight d. mass

You have two photos of a person walking. one shows the person at the corner of third and main streets, the other shows the person at the corner of tenth and main streets. there are lampposts at every corner in this town, and the first picture shows it to be 10: 32: 00 exactly. the second picture shows it to be 10: 49: 30. you know three facts: (1) all of the clocks are synchronized; (2) there are exactly 12 equal-sized blocks per kilometer in this town; and (3) the streets that cross main in this area are numbered consecutively, with no interruptions. what is the person’s average speed in kilometers per hour?