In the field below, discuss one other potentially questionable claim of the original story as reported in the e-mail that might be tested by applying laws of physics. Record the values provided in the assignment and do the calculations. When two fields are provided for a quantity, the number part of the answer goes into the first field and the units in the second field. Example: | How many centimeters in 1 meter: 100 cm Useful unit conversions to change data from English units of force, weight in pounds, and speed in MPH to metric units of force in Newtons, mass in kilograms, and speed in meters/second: 1 pound = 4.448 Newtons 1 pound of weight requires 0.4536 kg of mass 1 MPH = 0.44704 m/s 1. Use the estimated thrust of a JATO rocket and the time it fires to predict the change in momentum of the car from the time the rocket starts until it stops. You can use the time given in the story or the shorter time listed in the properties of the 15-KS-1000 solid fuel rocket. Formula: Change in Momentum = Force x Time Rocket Thrust in units of Newtons Time thrust is applied Impulse | The car's change in momentum 2. Given the mass of the car plus rocket, use the change in momentum to calculate the change in speed. Formula: momentum = p = mass X velocity. Mass of car in kilograms Mass of rocket in kilograms Total mass of car and rocket in kilograms Change in speed of car (in m/s 3. Convert this speed from meters/ second to MPH. Then add this to the alleged initial speed when the rocket was fired (assume 50 MPH). Change in speed of car (in MPH) | Final speed of car after adding initial speed
The rocket's mass is about 65 Kg
The Impala's mass is 1680 kg
The rocket's thrust is 1000 Ibf for 15 seconds
Maximum thrust in 5 seconds
After that - full power 20-25 seconds
In the field below, discuss one other potentially questionable claim of the original story as reported...
2. An object of 5 kg is released from rest 1000 meters above the ground level and allowed to fall under the influence of gravity. Assuming that the force due to air resistance is proportional to the velocity of the object with proportionality constant k = 50 kg/sec determine the formula for the velocity of the object 3. A rocket having an initial mass mo kg is launched vertically from the surface of the Earth. The rocket expels gas at...
tance (160 ft) to meters. (The conversion factors are in Appendix B.) and (3.241 U derive Equation (3.25). tance from 60 miles per hour (mph) is (b) Compute the average acceleration in meters/sec- measure of the brakes of an automobile. In this test, the ond and then use f ma to compute the average braking force in newtons. one brakes are applied while the car is traveling at a steady 60 mph. The braking distance is the distance from the...
A1300-kg can travels at 22 m/s and then quickly stops in 3.6 s to avoid an obstacle What is the initial speed of the car in mph? mph Submit Answer Tries 0/2 What is the initial kinetic energy of the car in kilojoules (kJ)? kJ Submit Answer Tries 0/2 What is the initial momentum of the car? kg*m/s Submit Answer Tries 0/2 What is the magnitude of the impulse necessary to stop the car? kg*m/s Submit Answer Tries 0/2 What...
QUESTION 1 A battery operated car of mass 1,225 kilograms uses a 10.4 volt system. What is the charge in coulombs the batteries must be able to move in order to accelerate the care from rest to 22.7 meters per second? Your final answer must be in scientific notation. Remember that 333 = 3.33e2. All you need to do is give me the number here as I have already given you the units and this silly program cannot handle units....
QUESTION 1 Two skaters, one of mass 80 kg, the other of mass 40 kg, are standing next to each other on frictionless ice rink. The 40 kg skater pushes the 80 kg skater. After the push, the 80 kg skater is going at 1 m/s. How fast and in what direction is the 40 kg skater going after the push? (HINT: use the fact that since there are no external forces, the velocity of the center of mass of...
1.) A 1.7-kg falcon catches and holds onto a 0.675-kg dove from behind in midair. What is their final speed, in meters per second, after impact if the falcon’s speed is initially 27 m/s and the dove’s speed is 7.5 m/s in the same direction? 2.) a.) A bowling ball of mass mb = 3.7 kg is rolled down the lane with a velocity of v1 = 2.8 m/s. It strikes a single remaining pin mp = 0.92 kg head...
1. John (who is 95 kg) drives his car over an absurdly large half-circle speedbump with a radius of 5 meters. Given that his normal weight is 930 N and his apparent weight at the top of the speed-bump was 246 N, how fast did he drive over the speed bump? 2. When working in circular motion problems, what do we define as always being the positive direction? 3. When in circular motion, the net force points in what direction?...
2 Hammer Throw: 10 pts Remember this: In Men's Hammer Throw at the Olympics a 16 pound ball (the ham- mer) is attached to a wire that's ap- proximately 4 ft long and whirled around a circle and let go. Olympians spin their bodies incredibly fast- during their last "wind" before release they spinning at less than a second per revolution. For the men's sport, given a few facts Figure 3: 2015 Big Ten Outdoor we're going to find out...
Linear Momentum of an object is conserved At all times b. Only when the net external force on the object is Zero When the net external torque on the object is Zero d. Never A truck of mass 4000 (kg) is moving at 10 (m/s). A car of mass 1000 (kg) is moving at 40 (m/s). So, the truck’s momentum, compared to the car, is Greater b. Smaller c. the same d. Cannot say without knowing their accelerations A 1000...
Please answer part c this question has been posted previously
was given the wrong answer
To understand how the linear momentum equation is derived from Reynolds transport theorem and to use the equation to calculate forces. The Reynolds transport theorem(DNDt)syst-aatJcvηρdVtfcsqpVdA relates the change in an extensive quantity N for a system of Lagrangian particles (the left side) to the changes in an intensive quantity η:nm, where m is the mass of the system, in a Eulerian control volume that initially...