Homework Answers
•A basketball is rolling on a horizontal surface - A=0
•A basketball flies vertically up - A<0
•A basketball falls vertically down - A>0
•A basketball to thrown at angle to yhe horizon(moves on a parabolic tragectory) - sign of work is changed during the motion
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QUESTIG What work does weight do when: A=0 Aco B. A. A basketball ball rolling on...
please explain III Which of the following is the correct graphical representation for C-(A-B)? (Symbols in bold type are vectors) IIII] When a ball is thrown vertically up with some initial speed...
please explain
III Which of the following is the correct graphical representation for C-(A-B)? (Symbols in bold type are vectors) IIII] When a ball is thrown vertically up with some initial speed it slows down as it moves up reaches a certain maximum height, and then falls straight down. Assume no air friction. During the trajectory of the ball in the air, which one of the following is true? lal The acceleration and velocity of the ball both increase on...
1. A ball of weight 5.0 newtons is thrown towards the ceiling and hits with the...
1. A ball of weight 5.0 newtons is thrown towards the ceiling and hits with the speed shown at an angle = 37° from the vertical. The ball is in contact with the ceiling for 0.1 second. Use cos(37°) = 0.8 and sin(37°) = 0.6 a. Determine the magnitude and direction of the average acceleration of the ball while it is in contact with the ceiling. (+4) 20" magnitude -.. direction (up/down) = b. Draw the free body diagram showing...
A ball of soft clay with mass 1 kg falls from a height of 10 m...
A ball of soft clay with mass 1 kg falls from a height of 10 m starting at rest. When the clay hits the ground it flattens and comes to a stop. Which of the following is true? Gravity does work on the ball equal to 980 J, and all this energy is dissipated during the deformation of the ball on impact. Gravity does work on the ball equal to 98 J, and all of this energy is dissipated during...
Please show all work! 1. A train is traveling down a straight track at 20 m/s...
Please show all work!
1. A train is traveling down a straight track at 20 m/s when the engineer applies the brakes, resulting in an acceleration of 21.0 m/s2 as long as the train is in motion. How far does the train move during a 40-s time interval starting at the instant the brakes are applied? 2.A balli thrown vertically upward with a speed of 25.0 m/s.(o) How high does it rise? (b) How long does it take to reach...
was trying work on this homework but can’t seem to get it right the ball and...
was
trying work on this homework but can’t seem to get it right
the ball and the pendulum cup have the same velocity after the collision. As is the case with any collision, total momentum is conserved (unchanged). Using conservation of momentum, write down an equation for Vealefore in terms of the velocity of the hall together with the pendmcu ( d the mass of the al and that of the cup (meup). ball before= Using conservation of energy between...
Explore A baseball is thrown from the top of a tall building with an initial velocity...
Explore A baseball is thrown from the top of a tall building with an initial velocity of 10 m/s from a height of h= 11.5 m above the ground. Find its speed when it reaches the ground (a) if its launch angle is 37°, and (b) if it is launched horizontally. Conceptualize As the baseball moves upward and to the right, the force of gravity accelerates it downward. The vertical component of its velocity decreases in magnitude until the baseball...
Projectile A is fired at a speed Vo at an angle 0 above horizontal as shown...
Projectile A is fired at a speed Vo at an angle 0 above horizontal as shown and projectile B is fired at the sar but at a speed of 2%. Use this for Questions #1-7. angle Draw the initial velocity vectors for both projectile A and projectile B. Remember that the length of your arrows is important. 1. 2. Compare the initial horizorntal and vertical velocities of projectiles A and B. Be specific. Explain your answers. 3. Compare the horizontal...
please help! EXPERIMENT 12 Work and Energy Laboratory Report TI QUESTIONS 1. What was the work done by the suspended weight when the car (a) moved up the incline and (b) moved down the incline?...
please help!
EXPERIMENT 12 Work and Energy Laboratory Report TI QUESTIONS 1. What was the work done by the suspended weight when the car (a) moved up the incline and (b) moved down the incline? (Show your calculations Car moving up incline Car moving down incline 2. What was the work done by gravity acting on the car when it (a) moved up the incline and (b) moved down the incline? (Show your calculations.) θ=30° Car moving up incline Car...
The professor didn't make an answer key for this study guide and I wanted to know if I'm doing th...
The professor didn't make an answer key for this study guide and I wanted to know if I'm doing these right. 4. A man pushes with a force of 700 N on a broken down car at an angle of 0 degrees from horizontal. He manages to move it form to a garage. How much energy does he use? 5. A block sits on a horizontal surface with friction. The mass of the block is kg. A force of 14Nis...
1. A football has a mass of mp = 0.413 kg. It can be approximated as...
1. A football has a mass of mp = 0.413 kg. It can be approximated as an ellipsoid 6 in diameter and 12 in long. A 'Hail Mary' pass is thrown upward at a 45° angle with an initial velocity of 55 mph. Air density at sea level is p= 1.22 kg/m². Neglect any spin on the ball and any lift force. Assume turbulent flow and a constant air-drag coefficient of Cp = 0.13. The equation of motion of the...
please explain
III Which of the following is the correct graphical representation for C-(A-B)? (Symbols in bold type are vectors) IIII] When a ball is thrown vertically up with some initial speed it slows down as it moves up reaches a certain maximum height, and then falls straight down. Assume no air friction. During the trajectory of the ball in the air, which one of the following is true? lal The acceleration and velocity of the ball both increase on...
1. A ball of weight 5.0 newtons is thrown towards the ceiling and hits with the speed shown at an angle = 37° from the vertical. The ball is in contact with the ceiling for 0.1 second. Use cos(37°) = 0.8 and sin(37°) = 0.6 a. Determine the magnitude and direction of the average acceleration of the ball while it is in contact with the ceiling. (+4) 20" magnitude -.. direction (up/down) = b. Draw the free body diagram showing...
A ball of soft clay with mass 1 kg falls from a height of 10 m starting at rest. When the clay hits the ground it flattens and comes to a stop. Which of the following is true? Gravity does work on the ball equal to 980 J, and all this energy is dissipated during the deformation of the ball on impact. Gravity does work on the ball equal to 98 J, and all of this energy is dissipated during...
Please show all work!
1. A train is traveling down a straight track at 20 m/s when the engineer applies the brakes, resulting in an acceleration of 21.0 m/s2 as long as the train is in motion. How far does the train move during a 40-s time interval starting at the instant the brakes are applied? 2.A balli thrown vertically upward with a speed of 25.0 m/s.(o) How high does it rise? (b) How long does it take to reach...
was
trying work on this homework but can’t seem to get it right
the ball and the pendulum cup have the same velocity after the collision. As is the case with any collision, total momentum is conserved (unchanged). Using conservation of momentum, write down an equation for Vealefore in terms of the velocity of the hall together with the pendmcu ( d the mass of the al and that of the cup (meup). ball before= Using conservation of energy between...
Projectile A is fired at a speed Vo at an angle 0 above horizontal as shown and projectile B is fired at the sar but at a speed of 2%. Use this for Questions #1-7. angle Draw the initial velocity vectors for both projectile A and projectile B. Remember that the length of your arrows is important. 1. 2. Compare the initial horizorntal and vertical velocities of projectiles A and B. Be specific. Explain your answers. 3. Compare the horizontal...
please help!
EXPERIMENT 12 Work and Energy Laboratory Report TI QUESTIONS 1. What was the work done by the suspended weight when the car (a) moved up the incline and (b) moved down the incline? (Show your calculations Car moving up incline Car moving down incline 2. What was the work done by gravity acting on the car when it (a) moved up the incline and (b) moved down the incline? (Show your calculations.) θ=30° Car moving up incline Car...
1. A football has a mass of mp = 0.413 kg. It can be approximated as an ellipsoid 6 in diameter and 12 in long. A 'Hail Mary' pass is thrown upward at a 45° angle with an initial velocity of 55 mph. Air density at sea level is p= 1.22 kg/m². Neglect any spin on the ball and any lift force. Assume turbulent flow and a constant air-drag coefficient of Cp = 0.13. The equation of motion of the...
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