Answer:
The answer to your question is
a) t = 2.55 s
b) t = 5.5 s
Explanation:
Data
vo = 25 m/s
h = 2 m
g = 9.81 m/s
Formula
t = -(vo)/g
a)
t = -(25)/9.81
t = 2.55 s
b)
Tt = 2t
Tt = 2(2.55)
Tt = 5.1 s
Time in the last 10 m
10 = 25t + (1/2)(9.81)t²
Simplify
10 = 25t 4.91t²
4.9t² + 25t - 10 = 0
Solve the equation using an online calculator
t₁ = 0.37 s t₂ = -5.47 s
The correct answer is t₁, t₂ is incorrect because there are no negative answers.
Total time = 5.1 + 0.37
= 5.5 s
Answer:
2.The air molecules that come in contact with the warm land and water molecules gain energy by conduction.
3.Tectonic Plates
Hope its helps❣️
Answer:
190 m/s
Explanation:
Acceleration = Force/ mass
a = F/m........................ Equation 1
Where F = force, m = mass of the space probe.
Given: m = 20 kg,
F(t) = 6.00t²
when t = 10 s.
F = 6.00(10)²
F = 600 N
Substituting these values into equation 1
a = 600/20²
a = 30 m/s.
But.
a = (v-u)/t
Where a = acceleration of the body, v = final velocity of the body, u = initial velocity of the body, t = time.
making v the subject of the equation,
v = u+at..................... Equation 2
Given: a = 30 m/s², u = 40 m/s, t = 5.00 s.
v = 40 + 30(5)
v = 40+150
v = 190 m/s
Thus the velocity of the space probe = 190 m/s
The Earth heats up, the cloud coverage acting as a blanket to raise the general areas temperature.
In the part of the spectrum our eyes can detect (a spectrum is an arry of entities, as light waves or particles, ordered in accordance with the magnitudes of a common physical property, as wavelength or mass) Hope this helps you :D