11. (i) A small 75g toy rocket is launched straight up from the ground at 72 km/h (a) What is the kinetic energy of the toy rocket? (b) Find the work done by gravity after it has risen 10 m. (i) (a). The kinetic energy of the toy rocket is = 15000 J + (b). The work done by gravity after it has risen 10 m is = 7.35J (ii) (a) Following diagram shows a person is pushing the object with a force F through a distance x. F M Which of the following will not change the amount of work done by the man? changing the direction of the force F + (b). In which of the following cases is the kinetic energy of the object greatest ?

11. (i) A small 75g toy rocket is launched straight up from the ground at 72 km/h (a) What is the kinetic energy of the toy rocket? (b) Find the work done by gravity after it has risen 10 m. (i) (a). The kinetic energy of the toy rocket is = 15000 J + (b). The work done by gravity after it has risen 10 m is = 7.35J (ii) (a) Following diagram shows a person is pushing the object with a force F through a distance x. F M Which of the following will not change the amount of work done by the man? changing the direction of the force F + (b). In which of the following cases is the kinetic energy of the object greatest ?

Name: 11. (i) A small75g toy rocket is launchedstraight up from the ground
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Description: 11. (i) A small75g toy rocket is launchedstraight up from the ground at 72 km/h (a) Whatis the kinetic energy of the toy rocket? (b) Findthe work done by gravity after it has risen 10m.(i) (a). The kinetic energy of the toy rocket is =15000 J +(b).

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter8: Potential Energy And Conservation Of Energy

Section: Chapter Questions

Problem 81AP: Repeat the preceding problem, but this time, suppose that the work done by air resistance cannot be...

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