The final answer is B hope its helps
The three quantities are: acceleration, initial velocity and time
1. Acceleration
We can find the acceleration using Newton's Second Law of Acceleration:
F = ma
(8,000 N) = (70 kg)(a)
Solving for a,
<em>a = 114.286 m/s²</em>
2. Initial Velocity
For this quantity, we use the equation for rectilinear motion at constant acceleration.
2ax = |v² - v₀²|
where
x is the distance
v is the final velocity
v₀ is the initial velocity
2(114.286 m/s²)(0.60 m) = |0² - v₀²|
Solving for v₀,
<em>v₀ = 11.71 m/s</em>
3. Time
We can determine time fro the formula of acceleration:
a = |v - v₀|/t
114.286 m/s² = |0 - 11.71|/t
Solving for t,
<em>t = 0.102 seconds</em>
Answer:
option D
Explanation:
the correct answer is option D
acceleration of a body under free fall due to the effect of gravity is the called acceleration due to gravity.
Acceleration due to gravity is a constant value.
According to the International System of Measurements the acceleration due to gravity is 9.81 m/s² when an object falls vertically.
acceleration due to gravity is denoted by 'g'.
Answer:
A) F = -9.8 N
, B) F = 18.62 N
Explanation:
The Archimedes principle states that the thrust force is equal to the liquid farts dislodged by the body.
Let's apply Newton's equations
F = B –W
Thrust force is
B = ρ_water g V
Let's reduce volumes to the SI system
V = 14.3 L (1 m³ / 1000 L) = 14.3 10⁻³ m³
A) Tank full of air
m = 12.4 +2.9 = 15.3 kg
F = ρ_water g V - mg
F = 1 10³ 9.8 14.3 10⁻³ - 15.3 9.8
F = 140.14 -149.94
F = -9.8 N
The negative sign indicates that the force is descending
B) Empty tank
m = 12.4 kg
F = 1 103 9.8 14.3 10⁻³ - 12.4 9.8
F = 140.14 - 121.52
F = 18.62 N
Force is up