A van of mass 3200 kg with velocity +25 m/s collides head on with a sedan of mass 2000 kg with velocity -10 m/s. Calculate the velocity of the sedan after the collision. The van's speed was 0 m/s after the collision.? 10 m/s
20 m/s
30 m/s
40 m/s

Ann walks 80 meters on a straight line 33 ∘ north of east starting at point 1. draw ann's path. represent ann's walk with a vector of length 80 meters. draw the vector starting at point 1. the length given in the display is in meters.

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?

The slope of a velocity time graph over any interval of time gives the during that interval