SOLUTION: What is the speed of a 2.5-kilogram mass after it has fallen freely from rest through a distance of 12 meters?
4.8 m/s
15 m/s
30. m/s
43 m/s
Algebra.Com
Question 227698: What is the speed of a 2.5-kilogram mass after it has fallen freely from rest through a distance of 12 meters?
4.8 m/s
15 m/s
30. m/s
43 m/s
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
the magnitude of the mass has no effect (remember Galileo!!...)
time = velocity / acceleration
distance = 1/2 * acceleration * (time)^2
substituting ___ distance = 1/2 * (velocity)^2 / acceleration
sqrt(2 * acceleration * distance) = velocity
sqrt(2 * 9.8 * 12) = v ___ 15 = v
RELATED QUESTIONS
After stricking a floor , a certain ball rebounds 4/5 th height from it has fallen. Find... (answered by stanbon)
An object is released from rest on a planet that has no atmosphere. The object falls... (answered by Alan3354,Edwin McCravy)
1. If s is directly proportional to t, and s = 40 when t = 15, find t when s =
64.
t (answered by richard1234)
A rocket accelerates from rest at the rate of 55 m/s^2 for 20 s. It then moves at a... (answered by KMST)
On planet X : When a projectile is dropped from an aircraft, the distance, s, in metres... (answered by ikleyn,josmiceli)
The work W required to lift an object varies jointly with the object's mass M and the... (answered by math_tutor2020,greenestamps)
A boat is traveling east across a river that is 112 meters wide at 8 meters per second.... (answered by ikleyn)
The formula s=16t^2 is used to approximate the distance s, in feet, that an object falls... (answered by Alan3354)
Two masses 6.0 kg and 9.0 kg are hung from the two ends of a cord which passes over a... (answered by ikleyn)