When thinking about the impact force of a falling object, you can calculate the energy of the object at its point of impact if you know the height from which it was dropped. This type of energy is known as gravitational potential energy and it is equal to the object's mass multiplied by...
On land, you can think of the geoid as the level that ocean water would have if you were to dig a canal from the ocean's shore to any point on land. But the Earth is not in deep space -- it is in the middle of a chaotic solar system. There are all sorts of things changing ...
In terms of the solar system planetary ordering, Earth is the third planet closest to the Sun. As far as we know, Earth is the only place in the observable universe that hosts life as we know it. Earth's age is 4.5 billion years old....
People stick to Earth's surface even though the planet is rotating at high speed, and even there's no glue on the soles of our feet. The reason is simply that gravity bonds us to the planet with enough force to stop us whizzing off into space. But gravity isn't enough to keep us ...
After a rocket launches straight up, the rocket control mechanism uses the inertial guidance system (see sidebar) to calculate necessary adjustments to the rocket's nozzles to tilt the rocket to the course described in the flight plan. In most cases, the flight plan calls for the rocket to ...
● calculate the relative velocity of two objects moving along the same line using vector analysis ● conduct practical investigations, selecting from a range of technologies, to record and analyse the motion of objects in a variety of situations in one dimension in...
After a rocket launches straight up, the rocket control mechanism uses the inertial guidance system (see sidebar) to calculate necessary adjustments to the rocket's nozzles to tilt the rocket to the course described in the flight plan. In most cases, the flight plan calls for the rocket to ...
After a rocket launches straight up, the rocket control mechanism uses the inertial guidance system (see sidebar) to calculate necessary adjustments to the rocket's nozzles to tilt the rocket to the course described in the flight plan. In most cases, the flight plan calls for the rocket to ...