Answer:
Hey mate
Your answer will be <u>5 N</u><u> </u><u>Upwards</u><u>.</u><u> </u>
I will explain this to you.
In the attachment we can see that there are two forces acting on the object from the same side. And we know that when force acts from the same direction. Then the total force
=> sum of all the forces in that particular direction.
I hope you got it :)
TheSarcasmic
<span>Colloid, in chemistry definition is a heterogenous
mixture, of one substance is different from another, when mixed, either of the
substance (particularly the solid one), is evenly mixed with each other. It
could clearly be seen when one mixes a solution in a suspension state because
it forms a cloudy solution, however, in like suspension, it does not settle at
the bottom of the mixture. Best example of this is milk. When you mix milk
powder to a hot water, the solution is mixed evenly however the color of the
water from transparent changes to milkish white.</span>
Answer:
70 mph
Explanation:
We can write the position of the car at time t as
![x_c (t) = v_c t](https://tex.z-dn.net/?f=x_c%20%28t%29%20%3D%20v_c%20t)
where
is the speed of the car, while the position of the truck is
![x_t (t) = d + v_t t](https://tex.z-dn.net/?f=x_t%20%28t%29%20%3D%20d%20%2B%20v_t%20t)
where
is the initial distance between the car and the truck (at 3:00 pm)
is the speed of the truck
The car overcomes the truck when they have same position, so
![x_c = x_t\\v_c t = d + v_t t](https://tex.z-dn.net/?f=x_c%20%3D%20x_t%5C%5Cv_c%20t%20%3D%20d%20%2B%20v_t%20t)
This occurs at 4:30 pm, so 1:30 h (1.5 h) after the initial instant. So, by using
t = 1.5 h
And solving the equation for
, we find the speed of the car:
![v_c =\frac{d}{t}+v_t=\frac{30}{1.5}+50=70 mph](https://tex.z-dn.net/?f=v_c%20%3D%5Cfrac%7Bd%7D%7Bt%7D%2Bv_t%3D%5Cfrac%7B30%7D%7B1.5%7D%2B50%3D70%20mph)