How does kinetic energy change with distance?

When the planet moves farther away, the speed and kinetic energy decrease, and the gravitational potential energy increases. Therefore, angular momentum and energy remain constant. However, the gravitational potential energy does change, because it depends on distance.

Does more kinetic energy mean more distance?

Kinetic energy is the energy that is caused by the motion. If you double your speed to 60 mph, your vehicle’s kinetic energy quadruples, so your vehicle’s stopping distance also quadruples (4 X 45 feet = 180 feet).

What is the relationship between distance and time for constant acceleration?

The relation between velocity and time is a simple one during uniformly accelerated, straight-line motion. The longer the acceleration, the greater the change in velocity. Change in velocity is directly proportional to time when acceleration is constant….velocity-time.

a =	v − v0
t

What does S stand for in biomechanics?

(Biomechanics includes statics & dynamics) STATICS. ΣF = 0. » (i.e., the sum of the forces equals zero) » All forces acting on a body are balanced.

Does kinetic energy depend on distance?

The kinetic energy K of a particle moving in straight line depends on distance s as k=as2,Then the force acting on the particle is.

What does braking distance help show about kinetic energy?

It turns out that a car’s braking distance is proportional to its kinetic energy. The energy is dissipated as heat in the brakes, in the tires and on the road surface — more energy requires more braking distance. This explains why braking distance increases as the square of a car’s speed.

Is distance and acceleration the same?

Calculating acceleration involves dividing velocity by time — or in terms of SI units, dividing the meter per second [m/s] by the second [s]. Dividing distance by time twice is the same as dividing distance by the square of time. Thus the SI unit of acceleration is the meter per second squared .

What does N mean in biomechanics?

F. newton (N) Effect of one body on another. that causes the bodies to. accelerate relative to an inertial.

What is Theta in biomechanics?

With relative angles, we measure the angle between two body segments or lines. The angular position is denoted by the symbol theta (θ) and can be measured in degrees (°), radians (rads) or revolutions. Although degrees may be easier for you to interpret, rads play an important role in biomechanics.

What is the energy expenditure for walking and running?

Energy is measured in calories and is obtained from the body stores or the food we eat. This article looks at the energy expenditure for walking and running. A linear relationship exists at walking speeds of 3 to 5 km/hr of oxygen consumption but at faster speeds, oxygen consumption rises making walking less economical.

What is the difference between walking and running oxygen intake?

Above 8km/hr, the oxygen intake for a walker exceeds the oxygen intake of a runner. At 10km/hr, the walker’s oxygen (O2) uptake is 40 ml/kg/min compared to 35 ml/kg/min for the runner. See McArdle (2000) [1] . Body mass can be used to predict energy expenditure with reasonable accuracy when running on a firm level surface (road, track or grass).

What is the difference between jogging and running?

The demarcation between running and jogging depends on the individual’s level of fitness. Independent of fitness it becomes far more economical from an energy viewpoint to change from walking to running when your speed exceeds 8km/hr (5mph). Above 8km/hr the oxygen intake for a walker exceeds the oxygen intake of a runner.

What is the a linear relationship for walking speed?

A linear relationship exists at walking speeds of 3 to 5 km/hr of oxygen consumption but at faster speeds oxygen consumption rises making walking less economical. Body mass can be used to predict energy expenditure with reasonable accuracy at walking speeds of 2 to 4 mph (3.2 to 6.4 km/hr).