USE VECTOR NOTATIONA skier starts with a speed of 2.0 [m/s] and skis in a straight line down a hill at an angle of 15° with respect to the horizontal. The coefficient of kinetic friction between her skis and the snow is 0.100. What is its speed after 10 [s]?

A penguin slides down an icy incline on his stomach, as shown in the diagram below. The coefficient of kinetic friction between the incline and the penguin's stomach is 0.15. The angle of the incline is 0 = 25 degrees. The total distance down the incline is 25 meters. The penguin gets a running start so his speed is 2.5 m/s when he begins to slide down the incline. What is the penguin's speed when he reaches the bottom of the incline? Hint: use Newton's 2nd law to calculate the acceleration of the penguin on the incline, then use kinematic equations to calculate the speed of the penguin when he reaches the bottom. 2.5 m/s 25 m 25°

A luggage handler pulls a 15 kg suitcase up a ramp inclined at an angle 33⁰ above the horizontal by a horizontal force F of magnitude 180 N. The coefficient of kinetic friction between the ramp and the suitcase is 0.35. If the suitcase travels 1.6 m along the ramp, calculate  (e) If the package started from rest, what is its speed after it has travelled 1.6 m?

A 6 kg block, initially moving 4 m/s, slides 2.5 m down a ramp that is inclined 20 degrees above horizontal. The coefficient of friction is 0.3. How fast is the block moving after 2.5 m?