2. A 70 kg base runner begins her slide into second base while moving at a speed
of 4 m/s. The coefficient of friction between her clothes and Earth is 0.70. She
slides so that her speed is zero just as she reaches the base.
a. How much work is done by friction to stop the runner? (-560 J)
b. How far does she slide? (1.2 m)

Which of the following is a homogenous mixture? o a. a toy box filled with toys o b. blood o c. trail mix o d. spaghetti and meatballs submit

Which is the best for showing percentages of different types of cars sold(gas hybrid , electric , other ) in the united states ?

An engineer designs a roller coaster so that a car travels horizontally for 152 ft, then climbs 137 ft at an angle of 34.0° above the horizontal. it then moves 137 ft at an angle of 48.0° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)