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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

What is watts indicator mechanism?

A Watt's indicator mechanism (also known as Watt's straight line mechanism or double lever mechanism) which consists of four links. The four links are : fixed link at A, link AC, link CE and link BFD.

The displacement of the link BFD is directly proportional to the pressure of gas or steam which acts on the indicator plunger.

What is the misplaced modifier in the sentence Around the corner the sign reads forty-five miles per hour?

The misplaced modifier in the sentence is "Around the corner." It should be placed next to the word it is modifying, most likely "sign," to clarify that the sign, not the corner, reads forty-five miles per hour.

Is 2 pounds of strawberries a scalar or vector?

2 pounds of strawberries is a scalar quantity because it represents just the amount or magnitude of strawberries, without any direction associated with it. Vector quantities would involve both magnitude and direction.

A car and a bus are moving with same kinetic energy When an equal retarding force F is applied to both the cars what will stop first?

The bus will stop first. This is because the bus has more mass compared to the car, so it will experience a smaller acceleration for the same force applied. Therefore, it will take more time for the bus to come to a complete stop compared to the car.

Can a body posses two velocities at a specific time?

For different observers (moving at different velocities), the object will have different velocities (relative to the corresponding observer). For one and the same observer, the body will have only one velocity at any given time.

What is the rate of change of acceleration?

Velocity is the rate of change of position; acceleration is the rate of change of velocity; jerk is the rate of change of acceleration

See related link below for information on "Jerk"

What is the ball total energy given that the mass of the balls is 0.058kg and v equals 1x108ms-1?

The total energy of the balls can be calculated using the formula for kinetic energy: KE = 1/2 * m * v^2, where m is the mass of the balls and v is the velocity. Plugging in the values (m = 0.058kg and v = 1x10^8 m/s), we can calculate the total kinetic energy of the balls.

How do you find the distance given only the initial velocity traveled time and final velocity?

You can only know the distance for sure if acceleration or deceleration is constant. Add the start and end velocities and divide by two and then multiply by the time to get your distance.

When you accelerate and steer at the same time you are?

When you accelerate and steer at the same time, you are applying both translational and rotational forces to the vehicle. This can cause the car to understeer or oversteer, affecting its handling and stability. It is important to balance acceleration and steering inputs to maintain control of the vehicle.

What is the top speed on a 2000 gtp grand prix?

The top speed of a 2000 Pontiac Grand Prix GTP is around 140-150 mph, depending on factors such as road conditions and maintenance. However, it's important to always drive within the legal speed limits and prioritize safety on the road.

What is the amount of horizontal force required to start in motion an object sitting on a horizontal surface must be great than what?

The amount of horizontal force required to start in motion an object sitting on a horizontal surface must be greater than the force of static friction acting on the object. This is because the force of static friction opposes the applied force until the object starts moving.

What happen to simple pendulum at lowest point of its swing?

At the lowest point of its swing, a simple pendulum's velocity is at its maximum, and its potential energy is at its minimum. The kinetic energy is at its highest since the pendulum has the highest speed.

What happens to the acceleration of a simple pendulum as it approaches the lowest point of its swing?

The velocity reaches a maximum, and the pendulum will begin to decelerate. Because the acceleration is the derivative of the velocity, and the derivative at the location of an extrema is zero, the acceleration goes to zero.

What is meant when someone says that an athletic team has a lot of momentum or less its momentum?

When a team has a lot of momentum, it means they are performing well and experiencing success, which can build confidence and motivation. When a team loses its momentum, it means they are facing setbacks or challenges that are hindering their performance and progress. Momentum is often used to describe the psychological and emotional state of a team in relation to their performance.

What is time velocity?

Meaningless question, I'm afraid! Velocity is speed in a given direction. Speed is the distance travelled per unit time (eg miles per hour). "Time velocity" would therefore mean a distance in given direction, though why you'd want to describe it like this I have no idea, unless it was to try and baffle with pseudo-science!

How fast is 15 fps?

15 fps stands for 15 frames per second, which is the rate at which a device or screen displays images in a video. It is considered a low frame rate compared to the standard 30 fps or higher, resulting in slightly choppy motion and less smooth visual quality.

In an isolated system bicycle 1 and 2 each with the mass of 30 kg collide bike 1 was moving to the right at 2 ms while bike 2 was moving to the left at 4 ms what is the magnitude of their momentum?

The momentum of an object is given by the product of its mass and velocity. The momentum of bike 1 is 30 kg x 2 m/s = 60 kg.m/s to the right, and the momentum of bike 2 is 30 kg x 4 m/s = 120 kg.m/s to the left. When bike 1 and bike 2 collide in an isolated system, the total momentum is conserved. The magnitude of their total momentum is 60 kg.m/s + 120 kg.m/s = 180 kg.m/s.

Is the average speed equal to the magnitude of the average velocity justify your answer?

Yes usually and no rarely, velocity is defined as a vector, having both a direction and a magnitude (which is speed in the case of velocity). For instance 100 mph (speed) east (0o) (direction). In this form it is easy to see that the magnitude is 100 mph but mathematically to determine the magnitude of a vector you would divide the vector by its direction.

100 mph 0o / 0o = 100 mph

Average speed and average velocity share the same relationship as instantaneous speed and instantaneous velocity so divide out the average direction from your average velocity to determine your average speed. If this is over a time period and you know the beginning and ending places in space your averages will simply be the difference from the starting to the ending places.

So yes so long as you define speed to actually be the magnitude of the vector. However, if speed is taken without direction over time it may become something different. If an object travels along a vector with a negative magnitude its speed will not be negative but its vector magnitude will. Ex: A car travelling in reverse still has a positive speed but a compass will show it to be heading in the opposite direction of travel, a negative vector value...

What causes white smoke out of your exhaust at 75 miles per hour or more?

White smoke at high speeds may indicate a coolant leak into the combustion chamber or a problem with the fuel injector. It is recommended to have the vehicle inspected by a mechanic to determine the exact cause and address the issue promptly to prevent further damage.

Why the kinetic energy is zero for object falling towards Earth from space?

The kinetic energy of an object falling towards Earth from space is not zero. As the object accelerates due to gravity, its kinetic energy increases. At the point of impact with Earth, the object's kinetic energy is at its maximum before being converted into other forms of energy upon collision.

Is hours a vector or scalar quantity?

Since you can represent that with a single number, it isn't a vector - just a scalar.

How long to run 10k if you run at 8k per hour?

At a pace of 8k per hour you will need 1 hour 15 minutes to cover 10k

What is scalar or vector qualities?

A Scalar value is considered to only need a magnitude. A magnitude is just a value. Speed is considered a scalar quantity since it does not tell you anything about direction, just that's it's going 60 mph.

A vector quantity is made up of both a magnitude and a direction. An example is velocity. Velocity you state how fast you are going, and the direction in which you are going in.

In a head on collision what is the combined closing speed of 2 people going 55 mph?

The combined closing speed in a head-on collision between two people traveling at 55 mph each would be 110 mph. This is the sum of the speeds of the two individuals as they approach each other from opposite directions.

How fast is the mig-25 foxtrot?

The maximum speed of the Mikoyan-Gurevich MiG-25 "Foxbat" is around Mach 2.83 (around 3,530 km/h or 2,190 mph) at high altitude. This makes it one of the fastest military aircraft ever built.