can someone help me with these problems ?

An airplane is travelling north at 578.0 km/h. Ten minutes later it is travelling west at 327.0 km/h. What is the magnitude of the average acceleration vector in m/s2?

From a starting point you travel 45.0 km NORTH, 39.0 km WEST and 46.0 km SOUTH. Determine the angle (in degrees) that your total displacement vector will make with respect to the westerly direction.

A skydiver, who weighs 716.0 N is falling at a constant velocity. If the force of the air resistance acting directly on the skydiver is 48.0 N, what is the force of the air resistanc

Question

can someone help me with these problems ?

An airplane is travelling north at 578.0 km/h. Ten minutes later it is travelling west at 327.0 km/h. What is the magnitude of the average acceleration vector in m/s2?

From a starting point you travel 45.0 km NORTH, 39.0 km WEST and 46.0 km SOUTH. Determine the angle (in degrees) that your total displacement vector will make with respect to the westerly direction.

A skydiver, who weighs 716.0 N is falling at a constant velocity. If the force of the air resistance acting directly on the skydiver is 48.0 N, what is the force of the air resistanc

anonymous · Answer

A 108.0 kg boulder lies at the bottom of a hill. The hill is a straight incline at 25.0 degrees to the horizontal. A man applies a force to the boulder in a direction parallel to the incline such that the boulder rolls up the hill with constant velocity. Neglecting friction, what is the magnitude of the force applied to the boulder?