Take the moment car A starts to accelerate to be the origin. Then car A has position at time <em>t</em>
<em>x</em> = (20.0 m/s) <em>t</em> + 1/2 (2.10 m/s²) <em>t</em>²
and car B's position is given by
<em>x</em> = 300 m + (27.0 m/s) <em>t</em>
<em />
Car A overtakes car B at the moment their positions are equal:
(20.0 m/s) <em>t</em> + 1/2 (2.10 m/s²) <em>t</em>² = 300 m + (27.0 m/s) <em>t</em>
300 m + (7.00 m/s) <em>t</em> - (1.05 m/s²) <em>t</em>² = 0
==> <em>t</em> ≈ 20.6 s
Answer:
A sloping surface separating air masses that differ in temperature and moisture content is called a front.
Answer:
a) 
b) 
c)
d) 
Explanation:
a) To find the <u>highest point</u> of the ball we need to know that at that point the ball stops going up and its velocity become 0
Solving for y
b) To find how long does it take to reach that point:
<em><u>Solving for t</u></em>
c) To find how long does it take to hit the ground after it reaches its highest point we need to find how long does it take to do the whole motion and then subtract the time that takes to go up
Solving for t
<em>or </em>
Since time can not be negative, we choose the second option
d) To find the <u><em>velocity</em></u> when it returns to the level from which it started we need to use the following formula:
The sign means the ball is going down
The impact force makes sense because the impulse experienced by the body cause a great change in momentum of the body.
<h3 /><h3>What is impulse?</h3>
This is the force that acts on a body over a given period of time. The impulse experienced by a body is determined as the product of force and time of action.
J = Ft
The change in momentum of a body is equal to the impulse experienced by the body.
ΔP = Ft
Thus, the impact force makes sense because the impulse experienced by the body cause a great change in momentum of the body.
Learn more about impulse here: brainly.com/question/25700778
