Answer:
The ball has a potential energy of 53 J.
Explanation:
Mechanical energy, E = Kinetic energy + Potential energy
E = K.E + P.E
65 = 12 + P.E
P.E = 65 – 12
P.E = 53 J
Therefore the potential energy of the ball is 53 J
Answer: average speed of the ball would be 48 mph
Explanation:
because all you have to do is multiply 24 x .5 and that gives you your answer
Answer:
Both of them.
Explanation:
They are both because when your analyzing data , that is what happen's.
Answer:
Final velocity will be equal to 14 m/sec
Explanation:
We have given initial velocity u = 5 m/sec
Constant acceleration is given 
Time t = 6 sec
We have to find the final velocity
From first equation of motion
, here v is final velocity, u is initial velocity , a is acceleration and t is time
So 
So equal final velocity will be equal to 14 m/sec
Answer:
The period of the pendulum is 
Explanation:
The diagram illustrating this setup is shown on the first uploaded image
From the question we are told that
The length of the rod is 
The diameter of the ring is 
The distance of the hole from the one end 
From the diagram we see that point A is the center of the brass ring
So the length from the axis of rotation is mathematically evaluated as

Now the period of the pendulum is mathematically represented as


