How much work is done to increase the speed of a 1.0 kg toy car by 5.0 m/s?
50 J,
12.5 J,
25 J,
49 J​

Answers

Answer 1

Answer:

The correct option is (b).

Explanation:

We need to find the work done to increase the speed of a 1 kg toy car by 5 m/s.

We know that, the work done is equal to the kinetic energy of an object i.e.

[tex]W=\Delta K\\\\W=\dfrac{1}{2}mv^2\\\\W=\dfrac{1}{2}\times 1\times 5^2\\W=12.5\ J[/tex]

So, 12.5 J of work is done to increase the speed of a 1.0 kg toy car by 5.0 m/s.


Related Questions

A cyclist traveling at 5m/s uniformly accelerates up to 10 m/s in 2 seconds. Each tire of the bike has a 35 cm radius, and a small pebble is caught in the tread of one of them. (A) What is the angular acceleration of the pebble during those two seconds

Answers

Answer:

[tex]a=2.5\ m/s^2[/tex]

Explanation:

Given that,

Initial speed, u = 5 m/s

Final speed, v = 10 m/s

Time, t = 2 s

The radius of the tire of the bike, r = 35 cm

We need to find the angular acceleration of the pebble during those two seconds. It can be calculated as follows.

[tex]a=\dfrac{v-u}t{}\\\\a=\dfrac{10-5}{2}\\\\a=2.5\ m/s^2[/tex]

So, the required angular acceleration of the pebble is equal to [tex]2.5\ m/s^2[/tex].

Other Questions
What is the answer How do you solve it WikiHelp Ill give Brainly est Sustainable forestry: seeks to conserve forests for the long-term commercial harvest of timber and non-timber forest products by maintaining a mix of forest trees, by age and species, rather than imposing a monoculture. due to the complexity of goals, is most effective when it involves cooperation among environmentalists, loggers, farmers, indigenous peoples, and local, state, and federal governments. approaches vary from one forest ecosystem to another, in response to different environmental, cultural, and economic conditions. is all of the above. Andrew bought 3 boxes of granlla bars. There are 13 granola bars in each box. choose the expression that shows how many granola bars Andrew brought.13+b13bb1313b The vertices of GHJ are shown below. If this triangle is translated 2 units right and 1 unit down, what is the coordinate for vertex G'?G (10, 10)H (12, 12)I (14, 14)A(12, 10)B(10, 9)C(12, 9)D(12, 14) Organisms are named and classified based on physical characteristics inevolutionary treesLinnaeus taxonomymolecular clocksFreudian clads Which of the following BEST describes the difference between the functions of nucleic acids and enzymes? (A) Nucleic acids inhibit biochemical reactions, while enzymes provide structural support in cells.B) Nucleic acids contain the genetic code for protein synthesis, while enzymes catalyze chemical reactionsC) Nucleic acids are used as the building blocks of proteins, while enzymes are used as the building blocks of phospholipidsD) Nucleic acids transmit signals that begin biochemical processes, while enzymes convert carbohydrates into lipids and proteins Factor completely 12n^3 + 15n^2 + 4n + 5 please help me solve this problem!! science, who ever answers this will get a brainlest X + (x+1) + (x+2) = -21 I - Completa esta prctica de los verbos recprocos en el presente de indicativo.(1. escribirse)Los novios __ mensajes de texto.Nosotros __ mensajes de texto.Ana y Ernesto __ mensajes de texto.(2. escucharse)Mis tos __ con atencin.Nosotros __ con atencin.Ellos __ con atencin.(3. verse)Nosotros no __ a menudo.Fernando y Toms no __ a menudo.Ustedes no __ a menudo.(4. llamarse)Ellas nunca __ por telfono.Mis primos nunca __ por telfono.Pepe y yo nunca __ por telfono.(5. saludarse)Silvi y t __ todas las maanas.Nuestros vecinos __ todas las maanas.Nosotras __ todas las maanas.(6. hablarse)La pareja no __ despus de una discusin.Lul y yo no __ despus de una discusin.Nosotros no __ despus de una discusin.(7. conocer)Alberto y yo __ muy bien.Ustedes __ muy bien.Ellos __ muy bien.(8. encontrar)Los novios __ en la plaza todas las tardes.T y yo __ en la plaza todas las tardes.Mis amigas __ en la plaza todas las tardes.II - UN AMOR RECPROCODescribe la relacin de Laura y Elin conjugando los verbos recprocos en el presente de indicativo.Modelo: Laura ve a Elin todos los das. Elin ve a Laura todos los das.Laura y Elin se ven todos los das.Laura conoce bien a Elin. Elin conoce bien a Laura.__Laura mira a Elin con amor. Elin mira a Laura con amor.__Laura entiende bien a Elin. Elin entiende bien a Laura.__Laura habla con Elin por FaceTime todas las noches. Elin habla con Elin por FaceTime todas las noches.__Laura ayuda a Elin con sus problemas. Elin tambin ayuda a Laura con sus problemas. PLZ HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!When you come to an unfamiliar word, you can discover its meaning by examining the sentence's verb tense looking at the syllable breaks substituting a synonym summarizing the whole text 346 5670 86 90 10100 110 120 130 140 150 160 170 180 190 200 210236240 250 260 270 280 290 300QUESTION 17Item A" "Item BDARK CHOCOLATE NUTS & SEA SALTDARK CHOCOLATE CHUNKNutritionFactsServing size1 bar (409)Calories 200 Sodium 140mgArtServing Daily Value Angerving Daily ValueTotal Fat 159 19% Total Carb. 169 696Sat. Fat 3915% Fiber 7925%Trans Fat ogTotal Sugars 59Polyunsaturated Fat 3.59 nd. 4g of Added Sugars 896Monounsaturated Fat 89 Sugar Alcohol ogCholesterol Omg 0% Protein 696%Vitamin D 0% Calcium 4% Iron 6%. Potassium 4%Daily Value Amount/ServingNutritionDaily ValueTotal Fat 5gFacts6% Total Carb. 2398%Sat. Fat 1.59 8%Dietary Fibor 29 7%Serving size Trans Fat ogPolyunsaturated Fat 19Total Sugars 891 bar (359)Monounsaturated Fat 2.59Ind. 89 Added Sugars 10%Cholesterol 0mg 0% Sugar Alcohol og3% Protein 2gVitamin D 0% Calcium 2% Iron 6%. Potassium 2%Calories 150 Sodium 65mgINGREDIENTS: Almonds, peanuts, chicory rootfiber, honey, palm kernel oil, sugar, glucose syrup.rice flour, unsweetened chocolate, cocoa powder,sea salt, soy lecithin, natural flavor, cocoa butter.INGREDIENTS: Oats, cane sugar, semi-sweet chocolate (sugar, chocolateliquor, cocoa butter, soy lecithin, vanilla extract), canola oil, tapioca syrup,brown rice, millet, honey, coconut, buckwheat, amaranth, molasses,brown rice flour, oat flour, gum acacia, quinoa, sea salt, brown rice syrup.vanilla extract, Vitamin E (tocopherols to maintain freshness).KINDAUTY PREAllergen Information: Contains almonds, peanutsand soy.Made in a facility that processes tree nuts andsesame seeds.May contain nut shell fragments.KIND Pacetate ChunkHEALTHGRANS SRLAllergen Information:Contains coconut and soy.Made in a facility that process.es peanuts, tree nuts andsesame seeds+SITEIf someone were to ask you which one they should consume as a snack, which would you choose? Justify your answer using informationprovided from the labels. On a map,1 inch represents 5 miles.joel measure 2 1/2 inches between two cities on the map. how many miles apart are the two cities? Im timed plsss answer correctly Ill mark u brainliest Who "won" the Crusades in the end? How can making a personal budget lead to financial responsibility? x + 6 = -6please help me pls One equation in a system is 4x 2y = 8. Which equation gives the system no solution?