A crate is pushed 1.50m horizontally with a force of 2.40N under an opposing force of friction of 0.600N. What is the NET work done on the crate?

2.7 J

Explanation:

From the question,

The Net work done by the crate = Work done by the crate in moving if through a distance- work done against friction.

W = Fd-F'd Equation 1

Where F = force applied to the crate, d = distance moved by the crate, F' = force of friction

Given: F = 2.4 N, F' = 0.6 N, d = 1.5 m

Substitute these values into equation 1

W = 2.4(1.5)-0.6(1.5)

W = 3.6-0.9

W = 2.7 J

an obstruction

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.