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Kinematics
Kinematics is the study of how a body moves. This includes linear motion, angular motion, and rotational motion.
3,459 Questions
Did wind possesses both kinetic and potential energy?
Blowing wind has kinetic energy.
This can be transformed into electrical energy using a turbine to transform the wind into rotational kinetic energy and a generator or alternator to convert the rotational kinetic energy to electrical energy.
Water above a dam has potential energy from gravity and also from the weight of the water around it. Once it is moving or flowing down through the pipes it then has kinetic energy.
How many miles per hour can supersonic fly?
Mach refers to the speed of sound in air. Typically about 750 mi/hr but it varies faster or slower with temperature from cold to hot respectively. Mach one is one times speed of sound. Mach 3 would be three times speed of sound.
Thermal energy depends on what two factors?
I would say that an object's thermal energy depends on four factors: its mass, its temperature, its heat capacity, and any phase changes, for example from solid to liquid.
I would say that an object's thermal energy depends on four factors: its mass, its temperature, its heat capacity, and any phase changes, for example from solid to liquid.
I would say that an object's thermal energy depends on four factors: its mass, its temperature, its heat capacity, and any phase changes, for example from solid to liquid.
I would say that an object's thermal energy depends on four factors: its mass, its temperature, its heat capacity, and any phase changes, for example from solid to liquid.
What is slope of velocity graph?
The slope of a straight line tells the rate at which your variables are changing. In this case, it tells you how your velocity is changing over time, which in physics is how we define acceleration.
If you graph the velocity of an object vs time when it is falling through the air, it gives to the acceleration due to gravity because that is the acceleration all objects fall at.
What is the Kelvin temperature of a substance directly proportional to?
There is no simple answer to how temperature is defined at the microscopic level. However, though this is not entirely accurate, it helps to think of temperature as the average kinetic energy of the particles.
How many feet will take to stop at 60 mph?
That depends on the deceleration applied, in which case
time = 2x45 mph/a = 90/a
with a (the deceleration) measured in miles per hour per hour to give the time in hours.
If you mean the time that would be taken using the stopping distances in the UK Highway Code, then, assuming a constant deceleration (from the moment the brakes are applied after the thinking distance):
The stopping distance at 45 mph is 45 ft (thinking distance) + 101.25 ft (braking distance)
[braking distance is speed2 / 20 ft = 452 / 20 ft = 101.25 ft]
The thinking distance is travelled at 45 mph, giving:
think_time = 45 ft / 45 mph
= 45 ft /(45 x 5280 ft / 3600 seconds)
= 45 x 3600 / (45 x 5280) seconds
= 3600/5280 seconds
= 15/22 seconds
(This time is constant for all the emergency stopping distances given in the Highway Code.) Two equations of motion can be used to find the stopping time knowing the initial speed and distance (the final speed is zero):
final_velocity2 = initial_velocity2 + 2 x acceleration x distance
final_velocity = 0
→ acceleration = - initial_velocity2 / (2 x distance)
distance = initial_velocity x time + 1/2 x acceleration x time2
→ distance = initial_velocity x time - (1/4 x initial_velocity2 / distance) x time2
→ time2 - (4 x distance / initial_velocity) x time + 4 x distance2 / initial_velocity2 = 0
→ (time - 2 x distance/initial_velocity)2 = 0
→ breaking_time = 2 x distance / initial_velocity
= 2 x (101.25 ft) / (45 x 5280 / 3600 ft per sec)
= 202.5 x 3600 / (45 x 5280) seconds
= 9x15/2x22
→ total_stopping_time = 15/22 + 9x15/2x22 seconds
= 11x15/2x22 seconds
= 15/4 seconds
= 33/4 seconds
= 3.75 seconds.
How do you find the minimum coefficient of static friction for a mass on an incline of 32 degrees?
The equation for friction is F=uN.
F (friction), u (coefficient of friction), and N (normal).
So you first need to solve for the normal by using Newton's second law. Also solve for the x component of the gravity force. Since it is static friction, you know it should be at rest, so that x component force should be the same as the force of friction. Knowing that and the normal, plug it into the equation and solve for u.
What are some characteristics of net force?
1- It has direction.
2- It has magnitude.
3- It is the sum of all forces( normal + tangential).
net force = square root( normal force2 + tangential force2).
What is the violation on 125 mph on 65 mph?
Depends on what state. In Texas anything above 20 over the speed limit you go to jail for reckless driving.
Is 1000 meters per hour faster than 2 kilometers per hour?
No, it is ½ the speed. 1000m/h equals 1km per hour.
How long does it take to go 2640 feet at 35 mph?
It takes 51.43 seconds to travel 2,640 feet at 35 mph.
Speed spells can be seen as both beneficial and problematic, depending on the context in which they're used. In some scenarios, they can enhance gameplay by allowing characters to act more quickly and strategically. However, excessive reliance on speed spells may disrupt game balance or lead to frustrating experiences for other players. Ultimately, their impact depends on the game mechanics and how they're integrated into the overall gameplay experience.
Kinetic Energy= 1/2 M V2 =
1/2 (2.04 x 104) x (80 km/hr x 1,000m/km x 1 hr/3,600 sec)2 =
5,037,037 joules = 5,037 kilojoules
How does friction differ from other forces?
Friction produces heat. The other forces produce motion or stress.
What is the ratio of the time taken to go up and come down by a body thrown vertically up?
The ratio is 1: the motion is symmetric.
What is 400 meters per minute in miles per minute?
400 meters per minute is about 1/4 mile per minute.
The equation for vertical motion is y = v0t + .5at2.
y is vertical displacement
v0 is initial vertical velocity
a is acceleration (in meters, normal gravitational acceleration is about -9.8 m/s/s, assuming positive y is upward displacement and negative y is downward displacement)
At 20 mph, the speed is equivalent to approximately 29.33 feet per second. This conversion is based on the fact that 1 mile per hour is equal to 1.46667 feet per second.
