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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

237 hp is what in mph?

There is no correlation. One measures power, the other speed.

What is the definition of unbalanced foces?

-- A group of two or more forces is unbalanced when the vector sum

of its individual component forces is not zero.

-- A group of two or more forces is balanced when the vector sum

of its individual component forces is zero.

Notice that it's not the forces that are balanced or unbalanced.

It's the whole group of them that's balanced or unbalanced.

When an object is moving it stays moving unless acted upon by?

When an object is moving it stays moving unless acted upon by opposing force(s). i.e. gravity, friction, etc. See Newton's 1st law of motion: related links.

What is the coefficient of kinetic friction between vinyl and nylon- I have searched at least 30 Engineering handbooks with no luck?

You may have to determine the coeffient by experiment. It is impossible to include every possible combination of materials.

This can build a "sled" and place one material flat along the bottom. A thirty pound sled is common. Pull this weight across a flat surface covered by the other material. Measure the amount of force required to initiate movement using a spring scale (like a fish scale). This force in pounds divided by the weight of the sled in pounds will equal the coefficient of static friction. To determine the dynamic coefficient of friction, measure the pounds required to keep the sled in motion. This will be somewhat less than the force required to start the sled in motion.


The coefficient for vinyl and nylon should be quite low.

What does the slope of load vs deflection the represent?

It is an approximate measure of elasticity.

It is an approximate measure of elasticity.

It is an approximate measure of elasticity.

It is an approximate measure of elasticity.

How much acceleration with result when 450N of force acts on 30kg?

What you mean to say is: "The net force acting on the ball is 30 N."

F = M A

A = F / M = (30) / (4) = 7.5 m/s2

The displacement time graph of a body is ll to time axis what will you infer about the velocity of the body?

That the component of the velocity towards or away from the origin is zero. You can infer nothing at all about its overall velocity since it could be travelling in a transverse direction at any velocity.

What is 179 in mph?

179 kilometers per hour is 111.23 miles per hour.

What is the physical meaning of the area under the curve of the graph of velocity vs time?

The area under the speed/time graph between two points in time

is the distance covered during that time.

What has greater momentum and athlete with a mass of 90 kg or one with 100kg and they have the same velocity?

The athlete with a mass of 100 kg will have greater momentum because momentum is directly proportional to mass. Both athletes have the same velocity, so the athlete with the larger mass will have the greater momentum.

Which has more momentum a gun or the bullet it fires?

If the gun is stationary before the shot, then the momentum of the gun and the

momentum of the bullet are equal and opposite after the shot.

What does the area under the a speed time graph represent?

In a speed - time graph, the area under the line equals the distance traveled during the time interval

A of ____ = L X W

A of triangle = 1/2 bh

How fast does it take for a 150 pound person to reach 125 miles per hour?

The answer depends on the person's mode of transport. In all likelihood, the person's mass is irrelevant.

How many mph can you get in 15 passenger van?

How many mph? I have no idea; my speedometer only goes to 85.

How many mpg? About 16.

Mine shuts off at 98mph and comes back on at 95

Going 60 km hour speed coming 80 km hour speed per km how much?

Not enough information. What do you want to calculate, total time? If that is the case, divide the distance by the time for both the "coming" and "going" part, and add both together.