The crew member can decelerate at a maximum of 36 g. We must convert this into meters per second squared. Moreover, the terminal velocity of the crew member must be expressed in meters per second. These are:
acceleration = 36 * -9.81 = -353.2 m/s² (negative sign due to deceleration)
velocity = 126.1 km/hr = 35 m/s (this will be the initial velocity upon hitting the hay stack)
The final velocity of the crew member will be 0.
We use the formula:
2as = v² - u²
2 * s * -353.2 = 0² - (35²)
s = 1.73 meters
The haystack must be 1.73 meters high
Boyle's law states that the volume of a given mass of gas is inversely proportional to the pressure provided that the temperature remains constant.
Charle's law states that the volume of a given mass of gas is directly proportional to temperature provided that the pressur remains constant.
Answer:
Explanation:
There are two forces acting on the person as he's standing on the scale in the elevator:
- Its weight, , downward, with m = 45.0 kg being his mass and g = 9.8 m/s^2 being the acceleration of gravity
- The normal reaction exerted by the scale on the person, N, upward, which is equal to the value read on the scale, N = 460 N
Using Newton's second law, we can write
Where a is the acceleration of the person (and of the elevator). Solving for a,
And since we chose positive as the upward direction, the acceleration is upward.
The answer is to your question is force