Please help me, it’s important :(

Find the momentum for a 2.6-kg brick parachuting straight downward at a constant speed of 8.4 m/s .

Crowbar of 5 metre is used to lift an object of 800 metre if the effort arm is 200cm calculate the force applied

Which of the following is not a characteristic of s waves? a. travel slower than p waves. b. cannot be detected in locations more than 105° from an earthquake’s epicenter. c. travel through solids and liquids. d. only affect coastal regions.