A father racing his son has 1/2 the kinetic energy of the son, who has 1/3 the mass of the father. The father speeds up by 1.2 m/s and then has the same kinetic energy as the son. What are the original speeds of (a) the father and (b) the son? (a) Number i (b) Number Units Units ()
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- Consider the table. Vehicle 1 Vehicle 2 Vehicle 3 Vehicle 4 Mass (kg) 1000 2000 1000 2000 Velocity (m/s) 20 20 40 40 Kinetic energy (kJ) 200 400 800 1600 The table shows data collected for some vehicles on the road. What conclusion can be drawn about the relationship between mass, velocity, and kinetic energy? Answer Choices: a. If only the mass of the vehicle doubles, the kinetic energy increases by a factor of four. b. If both the mass and the velocity of the vehicle double, the kinetic energy will increase by a factor of eight. c. If only the velocity of the vehicle doubles, the kinetic energy will double. d. If both the mass and the velocity of the vehicle double, the kinetic energy will increase by a factor of four.An 11 kg object is flying at speed 4c/5. Calculate its kinetic energy, in units of kg c2.PRINTER VERSION 1 BACK NEX Z Your answer is partially correct. Try again. In the figure, a frictionless roller coaster car of mass m = 832 kg tops the first hill with speed vo = 19.0 m/s at height h = 44.0 m. What is the speed of the car at (a) point A, (b) point B, and (c) point C? (d) How high will the car go on the last hill, which is too high for it to cross? Use g=9.81 m/s2. First hill- B h/2 C (a) Number19 UnitsTm/s (b) Number28.15 UnitšT m/s (c) Number 35 Units m/s (d) Number" Units Click if you would like to Show Work for this question: gen/shared/assignment/test/aglist.uni?id3. Open Show Work earch 9:18 PM ENG 4/4/2021 13 ) is 16 17 .ロ/京 19home & 4 6. 7. 8. 9. 近
- * Incorrect. A proton (mass m = 1.67 × 10-27 kg) is being accelerated along a straight line at 2.00 × 10¹1 m/s² in a machine. If the proton has an initial speed of 1.30 x 105 m/s and travels 5.60 cm, what then is (a) its speed and (b) the increase in its kinetic energy? (a) Number i 3.28E-22 (b) Number i Units Units JA father racing his son has 1/2 the kinetic energy of the son, who has 1/2 the mass of the father. The father speeds up by 1.8 m/s and then has the same kinetic energy as the son. What are the original speeds of (a) the father and (b) the son?Releasing some frustration at the end of the semester, you throw your physics book (mass of 4.3 kg) off of a 24 m tall building. You throw your book so that it has a speed of 3 m/s right after you let go. What is the kinetic energy of your book after you let go? (in J) 12.9 1.01×103 206 0 19.4 How how fast is your textbook moving right before it lands? For now, ignore friction. (in m/s) 21.9 17.5 24.7 21.5 If friction is NOT negligible, and 350 J of the textbook's energy is converted to thermal energy as it falls, how fast is it moving just before it lands? (in m/s) 17.8 17.5 12.8 25.3 25.0
- PRINTER VERSION 1 BACK NEXT Chapter 07, Problem 001 A proton (mass m = 1.67 x 1027 kg) is being accelerated along a straight line at 4.60 x 1010 m/s2 in a machine. If the proton has an initial speed of 4.00 x 105 m/s and travels 1.10 cm, what then is (a) its speed and (b) the increase in its kinetic energy? (a) Number Units (b) Number Units Click if you would like to Show Work for this question: Open Show Work Question Attempts: Unlimited SAVE FOR LATER SUBMIT ANSWER 6:53 PM ENG search 3/30/2021 pause break prt sc insert delete 13) ohome 10 end mpgup 12Pgdn 45 %23 backspc 3 5. 8.A bird is flying at 3 m/s and its mass m=0.8 kg. Determine its Kinetic Energy. Include unitsA father racing his son has 1/2 the kinetic energy of the son, who has 1/3 the mass of the father. The father speeds up by 1.3 m/s and then has the same kinetic energy as the son. What are the original speeds of (a) the father and (b) the son?