9. A 51-kg woman runs up a flight of stairs in 5.0 s. Her net upward...
As part of her morning jog, a 65-kg woman runs up a flight of steps with a vertical height of 10 meters. She accomplishes this task in 15.0 seconds. a) What is the weight of the woman? b) How much work did the woman use to climb the stairs? c) What is her increase in potential energy? d) How much power did she use to climb the stairs? e) How much horsepower did she use?
A 59.5 kg woman starts from rest at the bottom of a flight of stairs that has a total height of 2.8 meters. She reaches the top of the stairs in 4.53 seconds. How much power does she generate in Watts if she is moving at 1.91 m/s at the top of the stairs and her body has an efficiency of 27.2%? Assume 3 significant figures in your answer.
12 A 60.0-kg woman who runs up a 3.00 m high flight of stairs in 3.50 s, starting from rest but having a final speed of 2.00 m/s? What is the final potential energy. A) 126 J B) 110W C) 153 J D) 120 J E) 140 J 13 A 100 g ball move upward with a velocity of 10 m/s from ground level in a free fall movement. What is the kinetic energy for the ball at ground level?
In a physics lab, a 80-kg student runs up a 2.5-meter tall flight of stairs in 2.0 seconds. The student's power rating is approximately W. a. 16 b. 64 c. 100 d. 160 e. 400 . 640 g. 1000 h. 4000 Thre roll t View Objectives Quit Mission Save Mission Selec а. С 8u 7 4 5 6 8 2 3