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sweenep
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If a body is in freefall and has reached its terminal velocity say 56 metres/s, its acceleration is zero, how do you work out with what force it would hit the ground
Should be just mass of falling object times speed with which it impacts. You should probably, for the sake of simplicity, assume that the landing area has no elastic properties. The force would be the same even if the thing lands in a bowl of Jell-O, but it would be distributed a lot differently.sweenep said:If a body is in freefall and has reached its terminal velocity say 56 metres/s, its acceleration is zero, how do you work out with what force it would hit the ground
Shhh! It happens.nishant said:oh!I made a mistake
I cannot believe that I confused 'force' and 'energy'. Sorry, guys. The terms just kind of swapped places in my head and I didn't notice. It's like when I'm stuck on a crossword puzzle answer for hours, then suddenly realize that I've misread the clue eight times in a row. (In my defense, I was on my 7th beer at the time.)Chi Meson said:Beg your pardon, but the last two responses are incorrect.
To calculate force in freefall with terminal velocity, you can use the formula F = mg - bv, where F is the force, m is the mass, g is the acceleration due to gravity, b is the drag coefficient, and v is the velocity. Alternatively, you can also use the formula F = ma, where F is the force, m is the mass, and a is the acceleration, which can be calculated by subtracting the drag force (Fdrag = bv) from the force of gravity (Fg = mg).
Terminal velocity is the maximum velocity that an object can reach when falling through a fluid, such as air. When an object reaches terminal velocity, the force of gravity is balanced by the force of drag, resulting in a constant velocity. This means that the force in freefall will also become constant, as there is no longer any acceleration.
The mass of an object has a direct effect on the force in freefall with terminal velocity. The greater the mass of an object, the greater the force of gravity acting on it. This means that a heavier object will experience a greater force in freefall compared to a lighter object, assuming they both have the same drag coefficient and are falling in the same fluid.
Yes, the formula for calculating force in freefall with terminal velocity can be used for objects falling in different fluids. However, the drag coefficient (b) will vary depending on the fluid's density and the object's shape and size. This means that the force in freefall may differ for the same object falling in different fluids.
The force in freefall with terminal velocity can be affected by several factors, including the mass and shape of the object, the density and viscosity of the fluid, as well as external factors such as wind and air pressure. These factors can all impact the drag force acting on the object, which in turn affects the overall force in freefall.