Explanation:
KE = 1/2*m*v^2
mass won't change
but velocity is
A: the force is pushing against the direction of the object, so velocity is decreasing, so KE is decreasing
B: the F net line is pretty much straight up, which means there is no net force pushing to the left, but velocity is still increasing
Why? Because if you use the pythagorean theorem, the hypotenuse is always longer than the legs.
Note: velocity only ever stays the same if there is no net force (or 0 acceleration), so all four of these are either decreasing or increasing
C: there is a net force to the right, so velocity is increasing
D: There is a net force to the right but velocity is to the left, so velocity is decreasing
Hope I got these right
Answer:43.311 J
Explanation:
Given
mass of frame
mass of wheel 
radius of wheel
v=3.22 m/s
Moment of inertia of each wheel\left ( I\right )=\frac{1}{2}mr^2[/tex]

kinetic Energy of whole cycle=Kinetic energy of wheels and frame+rotational energy of Wheels


K.E.=39.037+4.274=43.311J
Since all of the appliances ... and everything else in the house that's
plugged into a wall outlet ... are all in parallel, they don't have any
effect on each other. They don't know about each other. The
question asks about the frying pan, so the toaster and the lamp
have no effect on the answer.
The frying pan has 120 V applied to it, and it produces 1592 watts
of heat.
Power = (voltage)·(current)
1592 watts = (120 v)·(current)
Divide each side by 120v:
Current = (1592 watts) / (120 volts)
Current = 13.27 Amperes
Answer:
1.05045 kg/m³
Explanation:
= Density of air = 1.26 kg/m³
= Density of hot air
= Mass of balloon = 539 kg
g = Acceleration due to gravity = 9.81 m/s²
v = Volume of air in balloon = 
The net force on the balloon will be

Also


The density of hot air inside the envelope is 1.05045 kg/m³
<h3><u>Answer:- </u></h3>

<h3><u>Solution</u>:-</h3>
<u>Let us check all options -</u>
- A) An apple falling from a tree is under the influence of gravity. Thus some force is acting on the apple and it can not said to be in state of equilibrium.
- B) A car moving at a constant velocity may said to be in state of equilibrium but the since the car is in motion ,equilibrium is dynamic in nature .Thus , it is not in static equilibrium.
- C) A motorcycle speeding up has some acceleration due to some forces. Thus it can also not be said in state of static equilibrium.
- D) Since the force acting on bicycle sitting down in zero as well as it is in state of rest , thus bicycle sitting on the ground may said to be in static equilibrium.