Answer:
a.) a = 0 ms⁻²
b.) a = 9.58 ms⁻²
c.) a = 7.67 ms⁻²
Explanation:
a.)
Acceleration (a) is defined as the time rate of change of velocity
Given data
Final velocity = v₂ = 0 m/s
Initial velocity = v ₁ = 0 m/s
As the space shuttle remain at rest for the first 2 minutes i.e there is no change in velocity so,
a = 0 ms⁻²
b.)
Given data
As the space shuttle start from rest, So initial velocity is zero
Initial velocity = v₁ = 0 ms⁻¹
Final velocity = v₂ = 4600 ms⁻¹
Time = t = 8 min = 480 s
By the definition of Acceleration (a)
![a = \frac{4600 - 0 } {480}](https://tex.z-dn.net/?f=a%20%3D%20%5Cfrac%7B4600%20-%200%20%7D%20%7B480%7D)
a = 9.58 ms⁻²
c.)
Given data
As the space shuttle is at rest for first 2 min then start moving, So initial velocity is zero
Initial velocity = v₁ = 0 ms⁻¹
Final velocity = v₂ = 4600 ms⁻¹
Time = t = 10 min = 600 s
By the definition of Acceleration (a)
![a = \frac{4600 - 0 } {600}](https://tex.z-dn.net/?f=a%20%3D%20%5Cfrac%7B4600%20-%200%20%7D%20%7B600%7D)
a = 7.67 ms⁻²
In the experiment of free fall bob released a bag of mass 1 lb
so here we can say that initial speed of the bag is Zero
time taken by the bag to free fall is given as
t = 1.5 s
also the acceleration of free fall is given as
a = 9.8 m/s^2
now we will use kinematics equation here for finding the distance of free fall
![d = v_i * t + \frac{1}{2} at^2](https://tex.z-dn.net/?f=d%20%3D%20v_i%20%2A%20t%20%2B%20%5Cfrac%7B1%7D%7B2%7D%20at%5E2)
![d = 0 + \frac{1}{2}*9.8* 1.5^2](https://tex.z-dn.net/?f=d%20%3D%200%20%2B%20%5Cfrac%7B1%7D%7B2%7D%2A9.8%2A%201.5%5E2)
![d = 4.9 * 2.25](https://tex.z-dn.net/?f=d%20%3D%204.9%20%2A%202.25)
![d = 11.025 m](https://tex.z-dn.net/?f=d%20%3D%2011.025%20m)
so the bag will fall down by total distance of 11.025 m from its initial released position.
Answer:
The bus is moving at a constant speed.
Explanation:
We have the following facts from the question;
- The bus crosses a city block every 10 seconds.
- all the city blocks are the same length
Since all the city block are the same length, let's say the distance is d.
Since it crosses the city block every 10 seconds, we know that;
Speed = distance/time
Thus, Speed = d/10
Thus,it is moving at this speed of d/10 all through.
Therefore we can conclude that the bus is moving at a constant speed.
The answer is C. Sulfuric Acid is dangerous to living organism
Direct contact with your skin and it will cause Chemical Burns , Direct contact with your eyes and it could cause a permanent Blindness.
This chemical also suck the water out of everything, so you can guess what will happen if it get into your body.