Aball is dropped from rest from a tower and strikes the ground 125meters below. approximately how many seconds does it take for the ball to strike the ground after being dropped? neglect air resistance.

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?

What are the three ways that an object can accelerate

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity