Answer:
a) 
Now we can replace the velocity for t=1.75 s
For t = 3.0 s we have:
b) 
And we can find the positions for the two times required like this:
And now we can replace and we got:
Explanation:
The particle position is given by:
Part a
In order to find the velocity we need to take the first derivate for the position function like this:
Now we can replace the velocity for t=1.75 s
For t = 3.0 s we have:
Part b
For this case we can find the average velocity with the following formula:
And we can find the positions for the two times required like this:
And now we can replace and we got:
More impact will occur if a vehicle collides with an object traveling in the opposite direction rather than colliding with a stationary object.
<h3>What is Collision?</h3>
A collision may be described as a circumstance in which two or more bodies exert forces on each other in a moderately short period of time.
When vehicles collide with an object traveling in the opposite direction causes more impact because both bodies exert equal forces on to each other. While a stationary object bears less force, and hence the collision causes a little or less impact on the bodies.
Therefore, More impact will occur if a vehicle collides with an object traveling in the opposite direction rather than colliding with a stationary object.
To learn more about Collision, refer to the link:
brainly.com/question/24915434
#SPJ1
Answer:
Explanation:
18 kW = 18000 J /s
60% of 18kW = 10800 J/s
Latent heat of evaporation of water
= 2260 x 10³ J / kg
kg of water being evaporated per second
= 10800 / 2260 x 10³ kg /s
= 4.7787 x 10⁻³ kg / s
= 4.78 gm / s .
4.5 and then your units I forgot that part but the answer is 4.5<span />
