timmy is sitting at rest, he has50j ofGPE .then his dad gives timmy a big push, and when his dad let go timmy has 75J of GPE and 125J of KE a) Befoe his dad pushes him
GPE____ KE___ TE____
B) Immrdialty after his dad pushed him
GPE_____ KE____ TE___
C) think about the Law of converstation energey why did timmys total energey change?
D) at the top of timmys path
GPE___ KE____ TE_____
E) as he swings back down through the bottom of his path
GPe ___ Ke____ TE____
F) Timmy jumps off the swing just before he lands
GPE___ KE___ TE___
G) After timmy hits the ground
GPE___ KE___ TE____
Before his dad pushes him
GPE__50__ KE__0_ TE__50
B) Immrdialty after his dad pushed him
GPE75 KE_125_ TE__200_
C) think about the Law of converstation energy why did timmys total energey change?
Timmy gained energy
D) at the top of timmys path
GPE200 KE0 TE_200
E) as he swings back down through the bottom of his path
GPe 50 Ke_150 TE_200
F) Timmy jumps off the swing just before he lands
GPE 0 KE200 TE_200
G) After timmy hits the ground
GPE 0 KE 0_ TE_0_
To answer these questions, we need to understand the concepts of Gravitational Potential Energy (GPE), Kinetic Energy (KE), and Total Energy (TE).
Gravitational Potential Energy (GPE) is the energy possessed by an object due to its height and the force of gravity acting on it. The formula for calculating GPE is given by GPE = m * g * h, where m is the mass, g is the acceleration due to gravity, and h is the height.
Kinetic Energy (KE) is the energy possessed by an object due to its motion. The formula for calculating KE is given by KE = 1/2 * m * v^2, where m is the mass and v is the velocity.
Total Energy (TE) is the sum of GPE and KE of an object. TE = GPE + KE.
Now, let's go through each question step by step.
a) Before his dad pushes him:
GPE: 50J (Given in the question)
KE: 0J (Since Timmy is sitting at rest)
TE: GPE + KE = 50J + 0J = 50J
b) Immediately after his dad pushed him:
GPE: 75J (Given in the question)
KE: 125J (Given in the question)
TE: GPE + KE = 75J + 125J = 200J
c) The law of conservation of energy states that energy cannot be created or destroyed, only transferred or transformed from one form to another. In this case, Timmy's total energy changed because his dad applied a force to him, which resulted in the conversion of potential energy (GPE) to kinetic energy (KE).
d) At the top of Timmy's path:
In physics, we consider the top of the path as the maximum height attained. At this point, all of Timmy's initial GPE has been converted into KE.
GPE: 0J (Since he is at the maximum height)
KE: 200J (From the previous question)
TE: GPE + KE = 0J + 200J = 200J
e) As he swings back down through the bottom of his path:
At the bottom of the path, all of Timmy's initial KE has been converted back into GPE.
GPE: 200J (From the previous question)
KE: 0J (Since he is at the lowest point)
TE: GPE + KE = 200J + 0J = 200J
f) Timmy jumps off the swing just before he lands:
When Timmy jumps off the swing, his GPE is zero as he is at the ground level. His KE remains the same as it was just before he jumped.
GPE: 0J
KE: 200J (From the previous question)
TE: GPE + KE = 0J + 200J = 200J
g) After Timmy hits the ground:
Once Timmy hits the ground, both his GPE and KE become zero, as he comes to a complete stop.
GPE: 0J
KE: 0J
TE: GPE + KE = 0J + 0J = 0J
I hope this explanation helps you understand the concepts of GPE, KE, and TE and how they relate to Timmy's situation at different points in time.