Answer:
Explanation:
the force of the rocket engine pushing it up, the force of gravity pulling it down, maybe some force of air resistance as the rocket goes fast, hmmm Free Body Diagrams (FBD) should have any and all forces on the model, unless they are negligible . or so slight they really make little difference in the total outcome.
Answer:5.17 m/s
Explanation:
Given
let u be the speed at cliff initial point
range over cliff is 1.45 m
and range of projectile is given by


u=3.77 m/s
Conserving Energy

Kinetic energy=Kinetic energy +Potential energy gained
Let v be the initial velocity





Answer:
no becaus force is mass multiplied by acceleration. the mass of the elephant does not change
Gravity changes as the altitude change.<span> The gravitational force is proportional to 1/R2, where R is the distance from the center of the Earth the radius of earth where gravity is 9.8 m/s^2 is 6400 km this will serve as the zero mark.
g1/(g2) = R2^2/(R1)^2
so we set the constant values to R1 and the unknown distance as x
(9.8)/(8.80) = (6400-x)2/(6400)^2
solving for x we will get
x = 345.85 km above the earths surface
</span>
<span>Hope my answer would be a great help for you.
If </span>you have more questions feel free to ask here at Brainly.
<span> </span>
Answer:
E) I = 18.4 N.s
Explanation:
For this exercise let's use momentum momentum
I = Δp =
- p₀
The energy of the stone is only kinetic
K = ½ m v²
The initial energy is Ko and the final is 70% Ko
= 0.70 K₀
energy equation
= 0.7 ½ m v₀²
You can also write
= ½ m vf²
½ m vf² = ½ m (0.7 v₀²)
= v₀ √ 0.7
Now we can calculate and imposed
I = m (-vo √0.7) - m vo
I = m vo (1 +√0.7
I = 0.5000 20.0 (1.8366)
I = 18.4 N.s