Equation Jeopardy 1 The equations below describe one or more physicalprocesses. Solve the equations for the unknowns and write a problem state-ment for which the equations are a satisfactory solution.*-(0.001 kg) (9.8 N/kg) + T sin 88° = 0(−5.0 × 10-³ C)Ex + T cos 88° = 0

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Answered: * Equation Jeopardy 1 The equations…

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter8: Rotational Motion

Section: Chapter Questions

Problem 101A

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You are standing on a saucer-shaped sled at rest in the middle of a frictionless ice rink. Your lab partner throws you a heavy Frisbee You take different actions in successive experimental trials. Rank the following situations according to your final speed from largest to smallest. If your final speed is the same in two cases, give them equal rank. (a) You catch the Frisbee and hold onto it. (b) You catch the Frisbee and throw it back to your partner. (c) You bobble the catch, just touching the Frisbee so that it continues in its original direction more slowly. (d) You catch the Frisbee and throw it so that it moves vertically upward above your head. (e) You catch the Frisbee and set it down so that it remains at rest on the ice.
Does the kinetic energy of an object depend on the frame of reference in which its motion is measured? Provide an example to prove this point.
Scientists and engineers must interpret problems from various sources. We can practice this skill anytime we read a newspaper or magazine or browse the Internet. Consider the Rocket Car urban legend that can be found on many Internet sites, in which the Arizona Highway Patrol allegedly found the vaporized wreckage of an automobile. The story goes that after some analysis and investigation, it was believed that a former Air Force Sergeant attached solid-fuel rockets to his 1967 Chevy Impala and ignited the rockets approximately 3.9 miles from the crash site. The vehicle quickly reached a speed of approximately 275 mph. It continued at this speed for 20 to 25 seconds. The car remained on the highway for 2.6 miles before the driver applied the brakes. The brakes melted and the tires blew out, causing the vehicle to become airborne. It traveled through the air for 1.3 miles before it hit a cliff face 125 feet above the road. Of course, this story was debunked. It is physically implausible, but it can still provide an opportunity to practice analyzing a problem. a. C Draw a Sketch of the Situation. b. C For the constant-velocity part of the cars motion, identify initial and final positions, the velocity, and the time interval. c. N Calculate the displacement using the position data and then again using the velocity and time data. Are your results consistent? d. C If your results are not consistent, reread the legend and identify possible sources of the discrepancy.
Two blocks collide on a frictionless surface. After the collision, the blocks stick together. Block A has a mass M and is initially moving to the right at speed v. Block B has a mass 2M and is initially at rest. System C is composed of both blocks, (a) Draw a force diagram for each block at an instant during the collision, (b) Rank the magnitudes of the horizontal forces in your diagram. Explain your reasoning, (c) Calculate the change in momentum of block A, block B, and system C. (d) Is kinetic energy conserved in this collision? Explain your answer. (This problem is courtesy of Edward F. Redish. For more such problems, visit http://www.physics.umd.edu/perg.)
An archer shoots an arrow toward a 3.00 102-g target that is sliding in her direction at a speed of 2.50 m/s on a smooth, slippery surface. The 22.5-g arrow is shot with a speed of 35.0 m/s and passes through the target, which is stopped by the impact. What is the speed of the arrow after passing through the target?
Newton’s Law of Universal Gravitation :- Consider two particles of masses m1 and m2. The position of the first particle is fixed, and the distance between the particles is a units. Using Newton’s Law of Universal Gravitation, find the work needed to move the second particle so that the distance between the particles increases to b units.
Dizzy is speeding along at 35m / s as she approaches the level section of track near the loading dock of the Whizzer roller coaster ride. A braking system abruptly brings the 335-kg car (rider mass included) to a speed of .82m / s over a distance of 5.92 meters. Determine the magnitude of the braking force (in newtons ) applied to Dizzy^ prime s car. Answer : N (round to the nearest whole number )
A projectile proton with a speed of 1500 m/s collides elastically with a target proton initially at rest. The two protons then move along perpendicular paths, with the projectile path at 72° from the original direction. After the collision, what are the speeds of (a) the target proton and (b) the projectile proton? (a) Number Enter your answer for part (a) in accordance to the question statement Units Choose the answer for part (a) from the menu in accordance to the question statement This answer has no units° (degrees)mkgsm/sm/s^2NJWN/mkg·m/s or N·sN/m^2 or Pakg/m^3gm/s^3times (b) Number Enter your answer for part (b) in accordance to the question statement Units Choose the answer for part (b) from the menu in accordance to the question statement This answer has no units° (degrees)mkgsm/sm/s^2NJWN/mkg·m/s or N·sN/m^2 or Pakg/m^3gm/s^3times
1. Two equal mass cars (both measuring 2kg) roll towards each other on a level, low friction track. One cart rolls rightward at 2 m/s and the other cart rolls leftward at 1 m/s. after the carts collide, they couple (attach together) and roll together with a speed of what? _____ ignore resistive forces! 2Imagine you take two carts, one with a mass of 8kg and the other with a mass of 12kg. We set up a spring to "explosively" separate them and are able to measure the velocity of the lighter one at 12 m/s. Find the speed of the heavier one.
On the planet Gizmo, the inhabitants travel by high speed trains that run on air tracks much like the air track you used in lab. A train car with a mass of 8700 kg is traveling at 11.0 m/s when it strikes a second car moving in the same direction at 2.2 m/s. The two stick together and move off with a speed of 4.00 m/s. What is the mass of the second car? Explain your reasoning.
John is in a lab performing an experiment on collision. John takes a 3.0 kg car and sets it moving right with a speed of 1.0 m/s. This car collides with a second car of mass 6.0 kg that John has given a speed of 3.0 m/s left. After the collision, John notes the 3.0 kg car is moving 1.0 m/s left. From this, what would John observe as the velocity of the 6.0 kg car? A. 2.0 m/s to the right B. 0.80 m/s to the left C. 0.80 m/s to the right D. zero m/s E. 2.0 m/s to the left
A 110-kilogram tackler traveling at 2.5 m/s makes a head-on collision with and successfully carries an 88-kilogram halfback traveling at 5.0 m/s. Part A How fast will they be going together just after they smash into each other? Include the correct units and round your result to two major numbers. Submit 31 Value = v' Units Requested: O

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* Equation Jeopardy 1 The equations below describe one or more physical processes. Solve the equations for the unknowns and write a problem state- ment for which the equations are a satisfactory solution. -(0.001 kg) (9.8 N/kg) + T sin 88° = 0 (-5.0 × 10-8 C)Ex + T cos 88° = = 0