Answer:
Explanation:
Impulse of a force is measured by force x time or F X t 
Impulse also equals change in momentum or 
F x t = m v₂ - m v₁
The given case is as follows 
in the first case 
F x t = mv - o = mv 
F = mv / t
in the second case
F₁ x 4 t = mv 
F₁ = 1/4 x mv /t 
F₁ = F / 4 
option a) is correct .
iii )
In the last case 
F₂ X t = m v/2 -0
F₂ = 1/2 x mv / t 
= 1/2 x F 
F₂ = F/2 
Option e ) is correct. 
 
        
             
        
        
        
Answer:

Explanation:
Work is the product of force and distance. 

We know that 96 Joules of work were done and a 16 Newton force was applied to the object. 
Substitute the values into the formula. 

First, let's convert the units. This will make cancelling units easier later in the problem. 1 Joule (J) is equal to 1 Newton meter (N*m), so the work of 96 Joules equals 96 Newton meters. 

Now, solve for distance by isolating the variable, d. It is being multiplied by 16 Newtons and the inverse of multiplication is division. Divide both sides of the equation by 16 N. 


The units of Newtons cancel. 


The object moved a distance of <u>6 meters.</u>
 
        
             
        
        
        
Answer:
50 J
Explanation:
The net force acting on the box is given by the algebraic sum of the two forces, so:

The net work done on the box is equal to (assuming the net force is parallel to the displacement of the object)

where
F = 5 N is the net force on the object
d = 10 m is the displacement of the object
Substituting,

 
        
             
        
        
        
(a). If the temperature of a substance is increased the density of it will also increased. The temperature is directly proportional to the density because the molecular activity of the substance will be affected by the temperature
(b).The mass of the substance doesn't at all. Because the amount of matter inside the substance cannot be affected by the temperature except that its water 
        
             
        
        
        
Answer:
Because each color is refracted differently, each bends at a different angle, resulting in a fanning out and separation of white light into the colors of the spectrum.