Multiple Choice Questions 3) Suppose a player burns 155 Calories of chemical energy during a game of Sepak Takraw. They are 25% efficient at transferring chemical energy to the ball. How many grams of sweat (L, = 2.42 x 10 J/kg) would the player need to evaporate from their skin to remove the excess thermal energy (the energy not transferred to the ball)? a) 100 g b) 200 g c) 300 g d) 400 g e) 500 g f) 600 g 4) Sepak Takraw balls are woven from palm vines. A typical ball has a radius of 8 cm and a mass of 0.18 kg. Assuming the game is at sea level and the ball's drag coefficient is 0.3, what is its terminal velocity? a) 6 m/s b) 10 m/s Short Answer Question c) 14 m/s d) 18 m/s e) 22 m/s f) 26 m/s Sepak Takraw players are remarkably athletic and can jump to impressive heights to kick the ball. Suppose a player kicks a ball in the air, making contact when the ball is 1.25 m above the ground. Just after contact, the ball has a velocity of 10 m/s, 20° above the horizontal. For this question, you may ignore air drag and assume the ball lands on the ground. ⚫ Sketch a motion diagram for this projectile. Sketch an initial velocity vector and determine the x and y components of v¡. ⚫ How far horizontally (in m) does the ball travel before striking the ground?
Multiple Choice Questions 3) Suppose a player burns 155 Calories of chemical energy during a game of Sepak Takraw. They are 25% efficient at transferring chemical energy to the ball. How many grams of sweat (L, = 2.42 x 10 J/kg) would the player need to evaporate from their skin to remove the excess thermal energy (the energy not transferred to the ball)? a) 100 g b) 200 g c) 300 g d) 400 g e) 500 g f) 600 g 4) Sepak Takraw balls are woven from palm vines. A typical ball has a radius of 8 cm and a mass of 0.18 kg. Assuming the game is at sea level and the ball's drag coefficient is 0.3, what is its terminal velocity? a) 6 m/s b) 10 m/s Short Answer Question c) 14 m/s d) 18 m/s e) 22 m/s f) 26 m/s Sepak Takraw players are remarkably athletic and can jump to impressive heights to kick the ball. Suppose a player kicks a ball in the air, making contact when the ball is 1.25 m above the ground. Just after contact, the ball has a velocity of 10 m/s, 20° above the horizontal. For this question, you may ignore air drag and assume the ball lands on the ground. ⚫ Sketch a motion diagram for this projectile. Sketch an initial velocity vector and determine the x and y components of v¡. ⚫ How far horizontally (in m) does the ball travel before striking the ground?
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Transcribed Image Text:Multiple Choice Questions
3) Suppose a player burns 155 Calories of chemical energy during a game of Sepak
Takraw. They are 25% efficient at transferring chemical energy to the ball. How
many grams of sweat (L, = 2.42 x 10 J/kg) would the player need to
evaporate from their skin to remove the excess thermal energy (the energy not transferred to the ball)?
a) 100 g
b) 200 g
c) 300 g
d) 400 g
e)
500 g
f)
600 g
4) Sepak Takraw balls are woven from palm vines. A typical ball has a radius of 8 cm and a mass of 0.18 kg.
Assuming the game is at sea level and the ball's drag coefficient is 0.3, what is its terminal velocity?
a) 6 m/s
b) 10 m/s
Short Answer Question
c) 14 m/s
d) 18 m/s
e)
22 m/s
f)
26 m/s
Sepak Takraw players are remarkably athletic and can jump to impressive heights to kick the ball. Suppose a
player kicks a ball in the air, making contact when the ball is 1.25 m above the ground. Just after contact, the
ball has a velocity of 10 m/s, 20° above the horizontal. For this question, you may ignore air drag and assume
the ball lands on the ground.
⚫ Sketch a motion diagram for this projectile.
Sketch an initial velocity vector and determine the x and y components of v¡.
⚫ How far horizontally (in m) does the ball travel before striking the ground?
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