Answer:
Explanation:
To determine the magnitude of the restraining force acting on the roller coaster cars, we can use the equation:
Force = Mass * Acceleration
1. Calculate the initial velocity:
Initial velocity (u) = 17.1 m/s
2. Calculate the final velocity:
Final velocity (v) = 2.2 m/s
3. Calculate the change in velocity:
Change in velocity (Δv) = v - u = 2.2 m/s - 17.1 m/s = -14.9 m/s (negative because the roller coaster is decelerating)
4. Calculate the distance traveled:
Distance (d) = 13.6 m
5. Calculate the acceleration:
Acceleration (a) = Δv / t
We need to calculate the time (t) first. To do this, we can use the equation of motion:
v = u + at
Rearranging the equation, we have:
t = (v - u) / a
Substituting the values, we have:
t = (-14.9 m/s) / a
6. Now, substitute the values into the equation to calculate the acceleration:
a = (v - u) / t
a = (-14.9 m/s) / (-14.9 m/s / a)
a = 1 m/s^2
7. Calculate the magnitude of the restraining force:
Force = Mass * Acceleration
Mass = 4768 kg
Force = 4768 kg * 1 m/s^2
Force = 4768 N
Therefore, the magnitude of the restraining force that acts upon the roller coaster cars is 4768 Newtons.
(1%, 0.9%) simplest answer
Answer:
How are we expected to make an island
Answer:30 m
Explanation:
Given
Maximum Horizontal distance is 5 m on earth
launching angle
Acceleration due to gravity on earth is
Acceleration due to gravity on moon is
Range of projectile is given by
----1
-----2
Divide 1 & 2
Answer:
(a) 300 W
(b)0.90 J
Explanation:
(a) The electric power for any circuit element is given as
Here I is current passing in the circuit and V is the voltage.
Given I = 12 A and V =25 V.
Substitute the given values, we get
P = 300 W.
Thus, the power defibrillator deliver to the body is 300 W.
(b) To calculate the electric energy use the relation between electric energy, power and time as
Given t = 3 ms.
Substitute the values, we get
E = 0.90 J.
Thus, the energy transferred is 0.90 J.
B. Green
C. Yellow
D. Red