A 150 N force, applied to a wooden crate at an angle of 30 degrees above the horizontal, causes the crate to travel at a constant velocity across a horizontal wooden floor. Please show all work for the following question A. Calculate the magnitude of the horizontal component of the 150 N force.
B. Determine the magnitude of the frictional force acting on the crate.
C. Calculate the magnitude of the normal force exerted by the floor on the crate.

A33.1 g copper object is launched from a 1.5 m 30° steel incline positioned on the floor by being pulled up a string attached to a 50.0 g mass suspended vertically over a pulley. the object is projected towards a glass table where it lands when it is at the point along its trajectory with the lowest speed. it comes to a halt when it clears the opposite edge of the table. it then falls and lands on 9 physics texts each 5 cm thick that are stacked on the floor on the opposite side of the table. assume that the table does not have a ledge and the rectangular object experiences 0.05 n of air resistance as it falls towards the books. how far and how long did the object travel and how fast does it hit the books. assume that at the moment the copper object leaves the incline, the massless string and ideal pulley break off

What is the acceleration of a spaceship that is initially at rest and then speeds up to 220 m/s in 20 seconds

Can anybody me with this? ? (picture included.)