Answer:
The correct option is b: 30 N.
Explanation:
First, we need to find the acceleration due to gravity (a):
(1)
Where:
: is the final vertical position (obtained from the graph)
: is the initial vertical position (obtained from the graph)
v₀: is the initial speed = 0 (it is released from rest)
Δt: is the variation of time (from the graph)
From the graph, we can take the following values of height and time:
t₀ = 0 s → = 5 s
y₀ = 300 m → = 225 m
Now, by entering the above values into equation (1) and solving for "a" we have:
Finally, the weight of the object is:
Therefore, the correct option is b: 30 N.
I hope it helps you!
Can you give the answer choices.??
So it can read all the wave correctly
Answer:
Explanation:
Givens
d = 8.5 meters
vi = 0
a = 9.81
t = ?
Formula
d = vi * t + 1/2 a t^2
Solution
8.5 = 0 + 1/2 9.81 * t^2 multiply both sides by 2
8.5 = 4.095 t^2 Divide both sides by 4.095
8.5/4.095 = t^2
1.7329 = t^2 Take the square root of both sides
t = 1.316
It takes 1.316 seconds to hit the ground.