Less work was done. what is one possible reason why this has happened?
there was more force applied; therefore, there was less movement.
there was less force applied; therefore, there was more movement.
there was less force applied; therefore, there was less movement.
there was more force applied; therefore, there was more movement.

There was less force applied; therefore, there was less movement.

Explanation:

As we know that work done is given by the formula

so here we need to find the product of force and displacement

now here we know that if applied force will be less than it will give less displacement to the object as we know that acceleration depends on the applied force as the relation below

also the distance moved of the object will depends on the applied force as the relation below

so if we apply less force then it will have less acceleration which will cause less distance moved by the object.

so from above formula the work done will be less

the answer would be c. motion and direction

i hope this : )

scattering of light by tiny particles in air to produce the colors we see on sky, is dependent on the following factors:

(i) wavelength of light

(ii) size of the scattering particle  

(iii) distance traveled by light through the atmosphere.

according to rayleigh's law of scattering, the amount of scattering is inversely proportional to the fourth power of its wavelength. shorter the wavelength, greater is its scattering. hence violet/blue light is scattered more than red.

sun's light is a composite light ( visible light) with wavelengths in the range 400 nm (violet) to 700 nm (red). as sunlight passes through our atmosphere, the molecules of air scatter light according to their wavelengths. during sunrise and sunset, the sun's position is below the horizon. hence light from the sun travels a greater distance in the atmosphere when compared to its position a noon.

as sunlight enters the earth's atmosphere, blue light is scattered away and at the end of its journey in the sky, only red and orange wavelengths remain in the beam.

hence at sunrise and sunset, the sky appears reddish orange.