How much force is needed for a 2700-pound car to accelerate at 3.5 feet-per-second-squared? Neglect all...
How much force is needed for a 2700-pound car to accelerate at 3.5 feet-per-second-squared? Neglect all other forces such as aerodynamic drag. Enter the answer in pounds
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How much force is needed for a 2700-pound car to accelerate at
3.5 feet-per-second-squared? Neglect all...
A box with a frontal area of 2.0 feet-squared and with a drag coefficient of C-sub-D...
A box with a frontal area of 2.0 feet-squared and with a drag coefficient of C-sub-D = 0.9 is fastened to the roof of your car. What is the aerodynamic drag force in pounds due to the box alone at a velocity of 88 feet-per-second? Enter the answer in pounds
2. Your 300 kg rocket car gets a constant force from its rocket to accelerate it...
2. Your 300 kg rocket car gets a constant force from its rocket to accelerate it at 4 m/s for 10 seconds. How much energy is transferred by work in this process? Neglect friction from wheels and air resistance. Answer in kJ. Answer: less than 250. Hint: there is more than one valid approach to calculate the energy transfer in this problem. One is much easier than the other.
please help Question 16 (5 points) Two masses of mass 3.5 kg and 8.0 kg are...
please help
Question 16 (5 points) Two masses of mass 3.5 kg and 8.0 kg are initially stationary, and no external forces act on these objects. if the objects are 48 cm apart, and the two masses attract each other and meet, how far does the 3.5-kg mass move, in cm, from its original position to the point where the masses meet? (Enter number only; do not include units.) Your Answer: Answer Question 17 (5 points) The power of an...
13. Find all solutions to the equation. 13. (5 pts) 14. The force, F, needed to...
13. Find all solutions to the equation. 13. (5 pts) 14. The force, F, needed to break a board is inversely proportional to the length, L, of the board. If it takes 24 pounds of force to break a board that is 2 feet long, how much force would be needed to break a board that is 5 feet long? Remember to include correct units with your answer. 14. (5 pts) number units
Answer all please In all problems, neglect air drag and use g- 10 m/s2 when needed....
Answer all please
In all problems, neglect air drag and use g- 10 m/s2 when needed. 1. A car initially moving at 30 m/s in a straight direction, reduces its speed to 10 m/s in a time of 10 seconds. Calculate the distance travelled by the car. 2. A cannon positioned on a flat, horizontal ground shoots a shell with muzzle speed of 180 m/s. Calculate the maximum height reached by the shell if (i) It is shot in a...
N5D.4 (e) and (f) both sides of the x component of Newton's second lav v, and take the indefinite integral of both sides.) Rich- N5D.4 We have seen that the drag force between a fluid and an...
N5D.4 (e) and (f)
both sides of the x component of Newton's second lav v, and take the indefinite integral of both sides.) Rich- N5D.4 We have seen that the drag force between a fluid and an object moving through that fluid is proportional to 2 if the object is big and/or fast and/or the fluid is not a m ery viscous but is proportional to löl if the object is small Slo At kin d/or slow and/or the fluid...
Sample Class Problems-Force and Acceleration Prob#l: Two people are pushing a stalled car (the ma...
Sample Class Problems-Force and Acceleration Prob#l: Two people are pushing a stalled car (the mass of the car is 1850kg). One person applies a force to the car, while the other applies a force of 395N. Both forces act in the same of 560N also acts on the car, but in a direction opposite force arises because of friction and the extent to which the pavement opposes Find the acceleration of the car. direction. A third force to that in...
Dr. C. #2. (PHYS 121 engineering design exercise) You have seen why cars inherently accelerate qu...
Dr. C. #2. (PHYS 121 engineering design exercise) You have seen why cars inherently accelerate quicker in a straight line and have better fuel mileage than an SUV with the same engine; it's because of air drag and the smaller frontal area and better drag coefficient of the car. Now let's think about why cars handle (take turns, change lanes and make other quick maneuvers) better than an SUV. We'l1 simplify our analysis by considering a vehicle of mass M...
2) (25 pts) Consider a brute force attempt to crack keys for the following scenario. You...
2) (25 pts) Consider a brute force attempt to crack keys for the following scenario. You have in your possession a wireless emulator the size of a 6" cube (i.e., 6" x 6" x 6) with a weight of less than 5 pounds which you can take to a parking lot containing 1,000 new cars. Each car has a four-digit wireless door key (between "0000" and "9999 using wireless symbols) as well as a three-digit engine key (between "000" and...
Please try to answer all questions and show work. Thank you. 1. A baseball player is...
Please try to answer all questions and show work. Thank
you.
1. A baseball player is warming up and tosses a ball straight up into the air. The ball travels up until it reaches some maximum height, and then falls back down to the player's hand. If we neglect air resistance, then the magnitude of the acceleration of the ball is? A. largest the moment after it leaves the players hand. B. smallgst the moment after it leaves the player's...
2. Your 300 kg rocket car gets a constant force from its rocket to accelerate it at 4 m/s for 10 seconds. How much energy is transferred by work in this process? Neglect friction from wheels and air resistance. Answer in kJ. Answer: less than 250. Hint: there is more than one valid approach to calculate the energy transfer in this problem. One is much easier than the other.
please help
Question 16 (5 points) Two masses of mass 3.5 kg and 8.0 kg are initially stationary, and no external forces act on these objects. if the objects are 48 cm apart, and the two masses attract each other and meet, how far does the 3.5-kg mass move, in cm, from its original position to the point where the masses meet? (Enter number only; do not include units.) Your Answer: Answer Question 17 (5 points) The power of an...
13. Find all solutions to the equation. 13. (5 pts) 14. The force, F, needed to break a board is inversely proportional to the length, L, of the board. If it takes 24 pounds of force to break a board that is 2 feet long, how much force would be needed to break a board that is 5 feet long? Remember to include correct units with your answer. 14. (5 pts) number units
Answer all please
In all problems, neglect air drag and use g- 10 m/s2 when needed. 1. A car initially moving at 30 m/s in a straight direction, reduces its speed to 10 m/s in a time of 10 seconds. Calculate the distance travelled by the car. 2. A cannon positioned on a flat, horizontal ground shoots a shell with muzzle speed of 180 m/s. Calculate the maximum height reached by the shell if (i) It is shot in a...
N5D.4 (e) and (f)
both sides of the x component of Newton's second lav v, and take the indefinite integral of both sides.) Rich- N5D.4 We have seen that the drag force between a fluid and an object moving through that fluid is proportional to 2 if the object is big and/or fast and/or the fluid is not a m ery viscous but is proportional to löl if the object is small Slo At kin d/or slow and/or the fluid...
Sample Class Problems-Force and Acceleration Prob#l: Two people are pushing a stalled car (the mass of the car is 1850kg). One person applies a force to the car, while the other applies a force of 395N. Both forces act in the same of 560N also acts on the car, but in a direction opposite force arises because of friction and the extent to which the pavement opposes Find the acceleration of the car. direction. A third force to that in...
Dr. C. #2. (PHYS 121 engineering design exercise) You have seen why cars inherently accelerate quicker in a straight line and have better fuel mileage than an SUV with the same engine; it's because of air drag and the smaller frontal area and better drag coefficient of the car. Now let's think about why cars handle (take turns, change lanes and make other quick maneuvers) better than an SUV. We'l1 simplify our analysis by considering a vehicle of mass M...
2) (25 pts) Consider a brute force attempt to crack keys for the following scenario. You have in your possession a wireless emulator the size of a 6" cube (i.e., 6" x 6" x 6) with a weight of less than 5 pounds which you can take to a parking lot containing 1,000 new cars. Each car has a four-digit wireless door key (between "0000" and "9999 using wireless symbols) as well as a three-digit engine key (between "000" and...
Please try to answer all questions and show work. Thank
you.
1. A baseball player is warming up and tosses a ball straight up into the air. The ball travels up until it reaches some maximum height, and then falls back down to the player's hand. If we neglect air resistance, then the magnitude of the acceleration of the ball is? A. largest the moment after it leaves the players hand. B. smallgst the moment after it leaves the player's...
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