Total distance traveled = 74 + 83 = 157 km.
Total time traveled = 1 + 5 = 6 hours.
Average speed = total distance / total time
Average speed = 157 km / 6 hours = 26.1666 km per hour.
Round the answer as needed.
We can solve for the acceleration by using a kinematic equation. First we should identify what we know so we can choose the correct equation.
We are given an original velocity of 24 m/s, a final velocity of 0 m/s, and a time of 6 s. We and looking for acceleration (a) in m/s^2.
The following equation has everything we need:
So plug in the known values and solve for a:
0 = 24 + 6a
-24 = 6a
a = -4 m/s^2
Answer:
acceleration a = 1,557 m/s²
Explanation:
Let's use the kinematic equations, the initial distance is 70 m (Xo = 70 m), also if the track is 2200m long or 100m long when clearing use a distance in the path of
X = 2200-100-70 = 2030 m
With this data let's calculate the acceleration
Vf² = Vo² + 2 a X
the jet leaves the rest (Vo=0=
a = Vf2 / 2X
a = 80 2/2 2030
a = 1,557 m/s²
Answer:
74.4 kilowatts or 99.8 horsepower
Explanation:
The explanation is in the attachment.
The decay function is of the form
where
N₀ = initial amount
k = decay constant
t = hours
The material decays by 10% in 95 hours. Therefore
The time for the half life is given by
Answer: The half life is 625 hours