suxatphysix said:thanks, got part a right.
for b, I'm getting 42.18. is that right and would it be negative if it is going down?
used vf= vi + a*t and vf^2=vi^2+2*a*d
Free fall acceleration, also known as gravitational acceleration, is the acceleration experienced by an object when it falls freely under the influence of gravity. It is a constant value on Earth, with a magnitude of approximately 9.8 meters per second squared (m/s^2).
The only factor that affects free fall acceleration is the strength of the gravitational force, which is determined by the mass and distance between two objects. On Earth, the mass of the planet and the distance from the object to the center of the Earth both play a role in determining the value of free fall acceleration.
Free fall acceleration can be calculated using the formula a = g, where a is the acceleration and g is the gravitational constant, approximately equal to 9.8 m/s^2 on Earth. This formula only applies in idealized situations, as factors such as air resistance can affect the actual acceleration of an object in free fall.
Free fall is the motion of an object only under the influence of gravity, while terminal velocity is the maximum velocity that an object can reach when falling due to the balance between gravity and air resistance. In free fall, an object will continue to accelerate until it reaches terminal velocity, at which point the acceleration becomes zero.
Free fall acceleration varies on different planets depending on their mass and radius. The higher the mass and radius of a planet, the stronger the gravitational force and therefore the higher the free fall acceleration. For example, on the surface of the Moon, free fall acceleration is only 1.6 m/s^2 compared to 9.8 m/s^2 on Earth.