Kinematics is the study of how a body moves. This includes linear motion, angular motion, and rotational motion.

Kinematics is the study of how a body moves. This includes linear motion, angular motion, and rotational motion.

KE = 1/2mv2, where m is mass in kg, and v is velocity in m/s. The equation for kinetic energy indicates a direct relationship between kinetic energy, mass, and velocity of an object. However if velocity is constant, the KE and mass are still directly proportional, so that the greater the mass of a particle, the greater its kinetic energy. Read More

62.5 miles per hour equates to 91.67 feet per second. Read More

Both velocity and acceleration can be negative when an object is slowing down, or when an object accelerates backwards, which is a negative direction, such as a car backing out of a driveway. Read More

Perhaps the reason you're having difficulty solving this problem is the same reason that it's not possible for us here to solve it either: We don't know the units of those two numbers, and we don't know what the kinetic energy was before it increased. The fact that you haven't passed those items on to us in the question suggests that you didn't think they were important to the solution. Knowledge of the units is… Read More

Same force, opposite direction (according to Newton's Third Law). Read More

A toy car rolling down a ramp has kinetic energy. Read More

Potential energy + kinetic energy = total energy. Potential energy is stored or positional energy; chemical energy stored in a battery, a large weight up high where we can get gravity to do work with it. Kinetic energy is energy of motion; energy = 1/2mv^2. Read More

Before we get started ... in case I forget it later, I just want to mention that "45 mph" is only a speed, not a 'velocity'. Kinetic energy = 1/2 (mass) x (speed)2 That formula is pretty simple, but in order to just plug the numbers in into it, they have to be the mass and speed in SI (metric) units. So we'll calculate those first. -- Assuming that the car is driving on or… Read More

4 meters per second equates to 787.4 ft/min Read More

To get the potential energy when only the mass and velocity time has been given, simply multiply mass and the velocity time given. Read More

Work is the force multiplied by the displacement (the distance that the force moves an object). Read More

You are running at 30 miles per hour. Read More

Galileo filled in idle moments in church, by observing the period of the various chandeliers, and estimating their length. From this he deduced the formula linking the length of the string, and the period of the bob. You could do worse than replicating his experiments. And of special interest is the Foucault Pendulum, a good example of which is on display in the Smithsonian in Washington. And no doubt in other places as well. Whilst… Read More

That is completely unrealistic. C-14 has a half-life of several thousand years, not a few hours as implied in this example. Anyway, to solve this in general you can write the exponential equation: N = N0e-ÃŽÂ»t where N is the remaining amount, N0 is the original amount, ÃŽÂ» is the decay constant, and t is the time. Replace the numbers you know, and solve for ÃŽÂ». Note that the "disintegrations per minute" are proportional to… Read More

Speed. If you also know what direction it changes, then you have velocity. Read More

Mass doesn't change no matter what planet you go to. Weight is what changes since the acceleration due to gravity of different planets are different. Read More

The answer is: The momentum (mv) after the collision is the same as the momentum before it. The rest is just arithmetic. Before the collision, the momentum of the bullet is mv=(0.01)x(400) = 4 kg-m/sec. After the collision, the combined mass of the wood block plus the bullet is 910 gm. Its momentum mv=(0.910)x(v) = 4 kgm-m/sec. v = 4/0.910 = 4.396 m/sec . I've ignored the momentum lost during the embedding due to crunching… Read More

Answer #1: Yes. A simple case is that of an object moving in a circle at constant speed. Since the acceleration vector points to the center of the circle, the acceleration changes all the time. =================================== Answer #2: No. -- If acceleration is variable, that means acceleration is not zero. -- If acceleration is not zero, that means that either speed or direction is changing. -- If speed or direction changes, then velocity is not… Read More

no, becasue kinetic energy is so photosynthesis that it explodes the scorpian. Read More

The velocity position time graph is rightward. This can change at anytime. Read More

Right before it hits the ground and right after it bounces back up. Potential energy is "stored energy;" the the energy of a body or a system with respect to the position of the body or the arrangement of the particles of the system. If an object is moving very fact, it has kinetic energy, but if an object is in a position where it has the potential to move fast but isn't moving or… Read More

186,000 miles per second is equal to about 30 billion (29,933,798,400) centimeters per second. Read More

75 miles per hour equates to 110 feet per second. Read More

No. As it accelerates because of gravity (or as it loses potential energy), it gains kinetic energy and linear momentum. Read More

Miles Per Hour - 1934 was released on: USA: 1 August 1934 Read More

In an air flow the pressure above the kite is lower and the pressure under the kite is greater; as a result the kite ascend to lower pressures. Read More

Kinematics does not require constant acceleration. There are different equations for different situations. So some of the equations will be valid even when the acceleration is not constant. Read More

That is Newton's Second Law. Read More

Kinetic energy: 1/2 m v2 ; where m is mass and v is the velocity Potential energy: mgh ; where m is mass, g is gravity acceleration, h is height For a falling object, the summation of both energies is constant assuming no resistance or friction forces are existing. Read More

It is moving at 0.01944... (recurring) miles per second. Read More

Inertia is related to the mass, and it is proportional to the mass. When measuring things, you will usually measure the mass, not the inertia - but it basically amounts to the same. Just consider the mass to be what gives an object its inertia. Read More

40 'kilometers per hour'. It is equal to 24.86 miles per hour. Read More

At 60 mph it would take 3.41 seconds to cross an American football field. Read More

Speed occurs when a body moves with respect to some frame of reference. Read More

If air friction were not involved, then it would take a little over 43 seconds to free fall 30,000 feet. However, air friction limits the speed at which you fall to a maximum of about 120 miles per hour. It takes you about 5.5 seconds to reach terminal velocity, during which time you will fall only about 490 feet. It will then take you about 166.5 seconds to fall the rest of the 30,000 feet… Read More

It would be a relatively simple matter to answer the question if it included numbers before each appearance of 'ft'. Read More

The kinetic energy of any moving object is 1/2(mass)x(speed squared). The kinetic energy of an 80 kg jogger running at 4 m/s is 1/2(80)(16) = 640 joules. Read More

The type of energy produced by a CD player is mechanical energy. This is the sum of potential energy and kinetic energy. Read More

If displacement is directly proportional to the square of time, would have to do with the rate of change of acceleration. Read More

The ball gains kinetic energy because while potential energy decreases, the speed increases. So, the potential energy transforms into kinetic energy. Read More

You haven't mentioned a distance to go with the speed so it cannot be answered. However, if you're given miles in 15 mins, multiply by 4 and if 20 mins, multiply by 3 to get them per hour Read More