PLEASE HELP I need this answered RIGHT AWAY

We see steve stand shakily and head back to the defense table. he looks out onto the onlookers and sees his parents. his mother forces a smile and his father makes a fist and nods emphatically. we see steve sit down, start to pick up a glass of water, and have to put it down because his hand is shaking so badly. what can be determined from steve's actions? he loves his parents dearly. he feels very worried. he is not very thirsty. he did not tell the truth

Atrajectory has an initial velocity of 1,000 meters per second, and 5 seconds later, it has a velocity of 500 meters per second. which is the acceleration of the trajectory?

Em um acidente, um caminhão carregado de solução aquosa de ácido fosfórico (h3po4) tombou, derramando cerca de 24,5 toneladas dessa solução no asfalto. quantas toneladas de óxido de cálcio (cao) seriam necessárias para reagir totalmente com essa quantidade de ácido? 2 h3po4 + 3 cao → ca3(po4)2 + 3 h2o a. 14t b. 29t c. 42t d. 7t e. 21t