Cyclist A, who has constant speed 4.0 m s−1, overtakes cyclist B, who is stationary, at time t=0. 2.0 seconds later, cyclist B begins to accelerate uniformly at 1.0 m s−2.

Calculate the time at which cyclist B overtakes cyclist A.

Give your answer to an appropriate number of significant figures.

Drag each tile to the correct box. tiles bra i sequence

Assume that a person skiing high in the mountains at an altitude of h = 15100 ft takes in the same volume of air with each breath as she does while walking at sea level. determine the ratio of the mass of oxygen inhaled for each breath at this high altitude compared to that at sea level. assume that the air composition (i. e. % of air that is oxygen) is the same at sea level as it is at 15100 ft.

Aplayground merry-go-round has a radius of 4.6 m and a moment of inertia of 200 kg-m2 and turns with negligible friction about a vertical axle through its center. a child applies a 26.0 n force tangentially to the edge of the merry-go-round for 15.0 seconds. if the merry-go-round is initially at rest, how much work did the child do on the merry-go-round?