Trevor is pulling his younger brother in a wagon. he pulls the wagon 50 m to the corner with a force that is parallel with the ground. he then turns the wagon around and pulls it 50 m back to the starting point with the same force at an angle of 30° with respect to the ground. how does the amount of work trevor performs going to the corner compare with the amount of work he performs coming back? athey are the same because he uses the same amount of force. b they are the same because he travels the same distance. c. he does less work coming back because the force moving the wagon is only 50cos30°. d. he does more work coming back because the force moving the wagon is only 50cos60°.

The answer is C

note: the given question is incomplete.

complete question is given below.

which is an example of kinetic energy?

a. the energy stored in ethanol  

b. a hockey puck sliding across the ice  

c. a compressed spring  

d. a ball sitting at the top of a ramp

solution: the kinetic energy is the energy posses by the virtue of the motion of the object.

in the given options, a, c and d are the example of potential energy because it is the energy posses by the virtue of the rest of the object. but option b has the kinetic energy as the object is in motion.

hence, a hockey puck sliding across the ice   is the apex example of kinetic energy.

so, the option (b) a hockey puck sliding across the ice   is the correct option.

a. vertically

explanation:

i tried it and took the test

if im wrong then we have different tests