Voyager 2’s current relative velocity to the Sun is 15.436 km/s (55,570 km/h; 34,530 mph).

The greater the size of the masses, the greater the size of the gravitational force (also called the gravity force). The gravitational force weakens rapidly with increasing distance between masses. The gravitational force is extremely hard to detect unless at least one of the objects has a lot of mass.

So the force of gravity pulls harder on heavier objects, and it pulls every object no matter what the mass (neglecting air resistance) toward the Earth with enough force to have it accelerate 9.81 m/s/s. Smaller objects have smaller effects.

This means that the force of gravity increases with mass, but decreases with increasing distance between objects.

Science Words Mass– the amount of matter than an object is made of. Mass does not change with gravity.

The fastest spacecraft ever built has nearly touched the sun. NASA’s Parker Solar Probe, which launched in 2018, has set two records at once: the closest spacecraft to the sun and the highest speed reached.

The fastest speed at which humans have travelled is 39,937.7 km/h (24,816.1 mph).

2020 SSC Tuatara Hypercar

According to Fox News, humans—who top out at roughly 23 mph—may one day be able to reach phenomenal speeds of up to 40 miles per hour. That study showed that speed is based more on contracting muscle fibers than it is negated by sheer force of running.

Yes, 20.5 miles per hour is fast for humans in general. Keep in mind most humans are not in great shape to begin with. But with that said even for most athletes 20.5 mph is pretty damn good. Usain Bolt ran around 28 mph in his prime.

The speed of the moving treadmill belt is measured in miles per hour, or mph. This correlates to how fast you would be moving forward if you were walking or jogging outdoors. If you increase the speed to 10 on the treadmill, you are running at 10 mph. That’s a brisk pace, and equivalent to a 6 minute mile.