Question

a 5kg sphere is projected vertically up ward with a speed of 20ms-1. It rises to a height of 12m.The energy used up in over coming the air resistance is

Answer 1

Answer:

Conservation of energy is the best way to solve these type of problems.

Conservation of energy is the best way to solve these type of problems.The ball initially only has kinetic energy =

Conservation of energy is the best way to solve these type of problems.The ball initially only has kinetic energy =KE=12mv2=12(5)(20)2=1000J

Conservation of energy is the best way to solve these type of problems.The ball initially only has kinetic energy =KE=12mv2=12(5)(20)2=1000J The kinetic energy is converted to potential energy and energy used in overcoming air resistance:

Conservation of energy is the best way to solve these type of problems.The ball initially only has kinetic energy =KE=12mv2=12(5)(20)2=1000J The kinetic energy is converted to potential energy and energy used in overcoming air resistance:KE=PE+Efric

Conservation of energy is the best way to solve these type of problems.The ball initially only has kinetic energy =KE=12mv2=12(5)(20)2=1000J The kinetic energy is converted to potential energy and energy used in overcoming air resistance:KE=PE+Efric or

Conservation of energy is the best way to solve these type of problems.The ball initially only has kinetic energy =KE=12mv2=12(5)(20)2=1000J The kinetic energy is converted to potential energy and energy used in overcoming air resistance:KE=PE+Efric or12mv2=mgh+Efric

Conservation of energy is the best way to solve these type of problems.The ball initially only has kinetic energy =KE=12mv2=12(5)(20)2=1000J The kinetic energy is converted to potential energy and energy used in overcoming air resistance:KE=PE+Efric or12mv2=mgh+Efric or

Conservation of energy is the best way to solve these type of problems.The ball initially only has kinetic energy =KE=12mv2=12(5)(20)2=1000J The kinetic energy is converted to potential energy and energy used in overcoming air resistance:KE=PE+Efric or12mv2=mgh+Efric or1000Nm=(5)(9.81)(12)+Efric

Conservation of energy is the best way to solve these type of problems.The ball initially only has kinetic energy =KE=12mv2=12(5)(20)2=1000J The kinetic energy is converted to potential energy and energy used in overcoming air resistance:KE=PE+Efric or12mv2=mgh+Efric or1000Nm=(5)(9.81)(12)+Efric Efric =411J