Answer:
the angular velocity is the same for both.
Explanation:
Angular velocity is defined by the change in angle between time
w = Δθ /Δt
As the arm and elbow are on the same axis the two rotate the same angles, therefore the angular velocity is the same for both.
This does not happen with linear speed
v = w r
therefore as the hand has a greater radius its greater linear speed
Traalate
La velocidad angular es definida por el cambio del angulo entre el tiempo
w= Δθ/ΔDt
como el brazo y el codo están en el mismo eje los dos girar los mismo ángulos, por lo tanto la velocidad angular es la misma para los dos.
Esto no pasa con la velocidad lineal
v = w r
por lo tanto como la mano tiene un radio mayor su velocidad lineales mayor
Answer:
Laurens suv have been travelling 60km/h speed if she can covers the distance of 10 kilometers in 5 minutes.
Explanation:
As per the given question,
Distance = 10 km
Time = 5 minutes
Convert minutes into hour.
There are 60 minutes in one hour, hence 5 minutes in hours is written as
We know the relationship between distance, speed and time is as follows,
Speed = 120km/h
Laurens suv exceeds the limit by = 120 – 60
Thus the speed limit exceeds by 60km/h
.
Arrhenius' equation relates the dependence of rate constant of a chemical reaction to the temperature. The equation below is the Arrhenius equation
where k is the rate constant, T is the absolute temperature. As the temperature of the system increases, the rate constant also increases and vice versa.
Answer:
Explanation:
Let the time required for acceleration a₁ and deceleration a₂ be t₁ and t₂ .
Since final velocity during acceleration and initial velocity during deceleration are same
a₁ t₁ = a₂ t₂
5t₁ = 2 t₂ ------------------------------------------ ( 1 )
Distance travelled during acceleration = 1/2 a₁t₁²
= 1/2 x 5 x t₁² = 2.5 t₁²
Distance travelled during deceleration = 1/2 a₂t₂²
= 1/2 x 2 x t₂² = t₂²
Total distance travelled = 2 miles = 2 x 1760 x 3 ft = 10560
2.5 t₁² + t₂² = 10560
2.5 ( 2t₂ / 5 )² + t₂² = 10560
.4 t₂² + t₂² = 10560
1.4 t₂² = 10560
t₂ = 86.85 s
t₁ = 2t₂ / 5 = 34.75 s
t₁ + t₂ = 121.6 = 122 s
Total time taken = 122 s .
maximum velocity = a₁t₁
= 5 x 34.75 = 173.75 = 174 m/s .
Answer:
c. Your body is at rest but its inertia puts it in motion
Explanation:
