What is the momentum of an 18-kg object moving at 0.1 m/s ?

Does anyone have the answers to online physics course plato course physics, semester a v3.0

By what factor does the drag force on a car increase as it goes from 65 to 110 km/h?

Ahuge (essentially infinite) horizontal nonconducting sheet 10.0 cm thick has charge uniformly spread over both faces. the upper face carries +95.0 nc/m2 while the lower face carries -25.0 nc/ m2. what is the magnitude of the electric field at a point within the sheet 2.00 cm below the upper face? (ε0 = 8.85 × 10-12 c2/n · m2)