WebFirst, enter the mass of the object and choose the unit of measurement from the drop-down menu. The mass can be in grams, kilograms, pounds, and ounces. Then select the unit for the gravitational acceleration, either g or m/s 2. Making a choice will automatically generate the value for you. WebMar 1, 2024 · If we want to calculate an object’s mass, using its potential energy, we can use the following formula: m= \frac {E_ {p}} {g*h} So, if an object is 20 m above the ground, and its potential energy is 2500 J, its mass will be: m= \frac {2500J} {9.80665\frac {m} {s^ {2}}*20m}=12.75kg. Of course, the simplest way to calculate this type of ...
Energy calculations - Energy - KS3 Physics - BBC Bitesize
WebCalculate the energy transferred to the gravity store when a rocket of mass 4000 kg reaches 10 km up in the atmosphere. Express your answer in megajoules (MJ). Reveal … WebDec 14, 2010 · e= energy, m= mass, c2=speed of light squared.Answer:It is necessay to add units to each of the factors in the equation as the answer must be derived on appropriate units to be useful:E = energy (measured in joules) In turn, Joules is expressed as kg·m2·s−2m = mass (measured in kilograms)c = the speed of light (186,000 miles per … moment of triumph d2
Work/energy problem with friction (video) Khan Academy
WebSince friction is always an opposing force you subtract this from the 38.5KJ and get the 8455J mentioned. This is the kinetic energy so 1/2mv^2 and you then multiply both sides by 2 and get 16910 = mv^2. The mass is 90kg so divide both sides by 90 and get v^2=187.8889. Square root this and you end up with 13.7m/s. WebTranscribed Image Text: Considering electron and proton as two charged particles separated by d=5.1 x 10-¹1 m calculate the potential energy of the electron in the field of the proton. Take the mass of the proton 1.7 x 10-27 kg, the mass of the electron 9.1 x 10-31 kg, the electron charge -1.6 x 10-19 Cand 1 =9x10⁹ m/F. Give your answer in atto-Joules … WebThe Formula to calculate mechanical energy is given by: where, M.E = Mechanical Energy [Joules] m = Mass of an Object [kilograms] v = Velocity [m/s] g = Gravitation acceleration of earth [9.8m/s 2] h = Height from the ground [meters] In our below online mechanical energy calculator, enter the input values and click calculate button to find ... i am death in japanese