NEED ASAP WILL GIVE 10 POINTS EACH PERSON!! A plane zooms through the sky covering 1760 m in 8 sec. What is the speed of the plane? (Need units too!)

Roger pushes a box on a 30° incline. if he applies a force of 60 newtons parallel to the incline and displaces the box 10 meters along the incline, how much work will he do on the box? a. 5.2 × 102 joules b. 6.0 × 102 joules c. -5.2 × 102 joules d. -6.0 × 102 joules