Questions LLC
Login
or
Sign Up
Ask a New Question
Science
Physics
An object of mass 4kg is raised to a point A, 100m above the ground. If its initial potential energy is 4000J, what is its kinetic energy when it falls through a distance of 20m.
1 answer
loss of PE = gain in KE, so since it has moved down by 20m, that would be
mgh = 4*10*20 = 800 J
You can
ask a new question
or
answer this question
.
Related Questions
A balloon is rising with a velocity of 4.9 m/sec releases an object from height of 96 m. a) How long after its release will the
a stone is projected upwards at an angle of 30 degree to the horizontal from the top of a tower 100m and it hits the ground at a
An object is projected directly upward from the ground. Its distance in feet from the ground in t seconds is s equals
Why doesn’t an object falling from an airplane continue to accelerate?(1 point) Responses
Air resistance on the object will
1. The force (in Newtons) applied to an object varies jointly as its mass and acceleration. How much force is needed to
A mass of 5kg is taken from the ground to the height of 100m. Find the potential energy of the object
5. An object’s gravitational potential energy depends on the object’s mass, the strength of the gravitational field, and
What information is needed to calculate the gravitational force of an object?(1 point)
Responses the mass of the two objects the
An object is dropped from a height H above the ground. This free-falling object requires 0.904 s to travel the last 34 m before
Why doesn't an object falling from an airplane continue to accelerate? (1 point)
• The object's weight varies as it nears the