Answer: 8.43 m
Explanation:
Given
Mass of the rocket, m = 600 g = 0.6 kg
Speed of riling, v = 2.5 m/s
F = mg, where
F = weight of the rocket in N
m = mass of the rocket in kg
g = acceleration due to gravity in m/s²
F = 0.6 * 9.8
F = 5.88 N
Since the the vertical thrust on the rocket is 8 N and 5.88 N of it will be used to counter the rockets weight. Thus, the remaining 2.12 N is what is available to provide acceleration.
Upward acceleration of the rocket is..... F = ma, a = F / m
a = 2.12 / 0.6
a = 3.53 m/s²
using equation of motion, we will calculate how long it will take to rise 20 m in the air
S = ut + 1/2at², where u = 0
20 = 1/2 * 3.53 * t²
t² = 4. / 3.53
t² = 11.33
t = √11.33 = 3.37 s
The distance then is
v = Δx / t, such that
Δx = v * t
Δx = 2.5 * 3.37
Δx = 8.43 m
<span>The life forms of the biosphere are located within Earth's surface.</span>
You should just ask the wave
1) PE=mgh
mass 50 kg; height 3; g 9.81
50×3×9.81=1471.5 J
2. The student is opposing gravity force so
Fgrav=m×g
50 × 9.81= 490N
Work=force×displacement
490×3=1470J(this should always be the same as the potential energy)
3.Power=work×time
4410 W=1470×3
4. Greater than: power is dependent on work, work is dependent on force, force is dependent on weight,
Answer:
Keepers also have a useful safety function, as they stop external metal being attracted to the magnet. ... A keeper for low-coercivity magnets is just a strong permanent magnet that keeps all the domains pointing the same way and realigns those that may have gone astray.
