38. a worker pulls a 350-n packing crate at constant velocity across a rough floor by exerting a force f = 200.0 n at an angle of 30.0° above the horizontal. what is the coefficient of kinetic friction of the floor?

Acar is going 5m/s around a bend with a radius of 10m/s why is the accelerant?

Ahot-air balloon is drifting straight downward with a constant speed of 2.40 m/s. when the balloon is 7.63 m above the ground, the balloonist decides to drop one of the ballast sandbags to the ground below. how much time elapses before the sandbag hits the ground?

What is a view of science and psychology that says the value of knowledge depends on its usefulness? a. pragmatism b. psychotherapy c. physiology