Unit Activity_ Energy and Momentum

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ms/quizzing/user/attempt/quiz_start_frame_auto.d21?ou Time Left:1:44:59 Listen A force of 30.0 N is required to push a 20.0 Kg mass 2.00 m across the floor. The mass is then lifted a distance of 1.00 m to the top of a shelf. How much work was done on the mass? a) 1396 J Ob) 226 J c) 69.8 Derek Attwood: Attempt 1 d) 256 J

08_AP1_Conservation_of_Md sign Layout References Mailings Review View Help A A Aa - Ao|三 AaBbCcDd x, x A A- 三。三| Answer Paragraph Font way 1S Kineric energy not conservea n neiasLIC COLISIONS7 wnere 1s Tne energy 1OST? 生 because some kinetic energy had been transferred to something else. Synthesis Questions 1. Two locomotives, each weighing 100,000 kg and having a speed of 100 km/hr, race toward each other and have a completely inelastic collision. What is the final momentum of the system? Justify your answer.

aImssb1.mutah.edu.jo/mod/quiz/ Flag question In the potential energy experiment. If the kinetic energy of the system composed of masses mi and m2 is 0.786 J. Given that the masses are moving at a speed of 1.39 m/s find the mass of the cart mi (in units of kg) when m2= 110 g. m Select one: OA. 0.814 OB. 0.297 OC. 1.017 OD. 1.131 OE. 0.704 Previous page Next page Quiz navigation العربية الإنجليزية ...

Problem#4: How much kinetic energy can a nail with a mass of 8.5 g acquire when it is struck by a 0.5-kg hammer assuming that the hammer is moving with an initial speed of 9.3 m/s. B48 53240..png 278534592_80502...png 278385139_28081..png

emy.org/profile/me/assignments/teacher/kaid_1124494382968287202185517/class/6558258966872064# Khan Academy Donat Understand: forms of energy In his first soccer game of the season, Jorge kicks the ball toward the goal, but the other team's goalie catches it out of the air. Which of the following describe an energy transfer in this scenario? Choose 1 answer: The ball transfers kinetic energy to the goalie. The ball transfers gravitational potential energy to Jorge. Jorge transfers kinetic energy to the goalie. The goalie transfers kinetic energy to Jorge. Report a problem Stuck? Review related articles/videos. Check Do 4 problems Oo o o 61°F PrtScn Home End DII F9 F10 F6 F7 F3 F4 %23 24 % & 4. 5 6 7 8. 9. Y R

I just need to know what is the Energy Conservation Equation.

1. What happens to energy as the angle is changed? Why?2. Which object is quicker to strike the wall? Why? The ref(175 kg) piano (150kg) or crate(300kg)3. At different times what must be true about the sum of kinetic, potential, and thermal energies? Why?4. What happens to the energy after the object hits the wall? Why?5. When is kinetic energy largest? Why?6. When is potential energy largest? Why?7. When is heat energy largest? Why?8. What is the effect of friction on the kinetic, potential, and thermal energies? 9. What type of energy is equal and opposite to the work done by gravity?10. What type of energy is equal and opposite to the work done by friction?

Your friend wants to solve the world's energy problem by inventing a device that will deliver 10 times more energy than is put into the device.  Can this device work? Explain.

If the mass of the swimmer is 50 kg. d. Velocity impact is e. Assuming the swimmer falls directly downward and the motion is the work of gravity, then power is

For its size, the common flea is one of the most accomplished jumpers in the animal world. A 2.30-mm-long, 0.450 mg flea can reach a height of 20.0 cm in a single leap. Part B Calculate the kinetic energy of this flea at takeoff. Express your answer in joules. G| ΑΣΦ VE xa Xb K= 7 10 7 دات a b √x Vx X २४ Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining |X| ? X.10n X J

Question 18 If a quantity you calculated had units of kg. m/s, what type of quantity could it be? none of the given choices O potential energy O momentum work O kinetic energy 2 pts ◄ Previous Next ▸

If a Saturn V rocket with an Apollo spacecraft attached had a combined mass of 2.9 × 105 kg and reached a speed of 13 km/s, how much kinetic energy would it then have? Number i Units

Compare the kinetic energy of a 765.0 kg car moving at 20.0 m/s to the kinetic energy of a 1,530.0 kg car moving at an identical speed. KE ear 1 x 105 J %3D cal KE car 2 × 105 J %3D kinetic energy. Doubling the mass results i (select) halving no change to quadrupling doubling

8. Adult cheetahs, the fastest of the great cats, have a mass of about 70 kg and have been clocked running at up to 32 m/s. (a) How many joules of kinetic energy does such a cheetah have? (b) By what factor would its kinetic energy change if its speed were doubled? 9. From the second law of motion and the equation for velocity Derive the Work - Energy equation: ΣF = ma v² = 1 + 2a(22-21) W = K₂-K₁ 10. A 15.0-kg stone slides down a snow-covered hill as shown in the figure below, leaving point A with a speed of 10m/s There is no friction on the hill between points A and B. Calculate the velocity of the stone when it reached point B 20 m 15 m- B

Determine the velocity of a pontoon boat with a kinetic energy of 314255314255 J and a mass of 1689.01689.0 kg. What is the velocity of the pontoon boat?

If we know the total energy in a system is 140 J, and we know the Potential Energy is 100 J.  What is the Kinetic Energy?

How fast (in meters per second) must an iron ball with a mass of 42.2 g be traveling in order to have a kinetic energy of 12.49 J? answer in m/s   do not round off until the final answer

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Number 17

Assuming the outfielder throws a 0.150-kilogram baseball at 44.0 meters per second, the ball's beginning angle is 30.0 degrees. When the ball is moving at its fastest, how much kinetic energy does it have?

5 m/sec. This radar gun has an error A 2-kg ball is falling and a radar gun records its velocity as v = of +0.2 m/sec, meaning the difference between the ball's actual speed and the value the radar gun records is at most 0.2 m/sec. The ball's kinetic energy is given by the equation KE mv². (a) Use the radar gun's measurement to calculate the ball's kinetic energy.