Pleaseee helppp asappp Mr. Smith decided to have another group of students run some foot races to figure out who had the most kinetic energy. A student with a mass of 49 kg was able to reach a velocity of 5.8 m/s. What was their kinetic energy if they ran on a raised track 5 m off the ground?

A second student was also racing. They were able to generate 815 J of kinetic energy. They had a mass of 52 kg. What was the final speed they were able to reach?​

The energy released by a chemical reaction can be measured using a calorimeter. when barium hydroxide octahydrate crystals are reacted with dry ammonium chloride inside of a coffee cup calorimeter, the temperature of the 18.00 g of water in the calorimeter decreases from 30.0°c to 8.0°c. the equation for calculating energy absorbed or released by a reaction is: where q is the energy released or absorbed, m is the mass of water in the calorimeter, cp is the specific heat of water, and δt is the observed temperature change. if the specific heat of liquid water is 4.19 j/g·°c, how much energy was absorbed by the reaction?

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?

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?