Which by freud domain would cover bullying

All of the celestial bodies of the solar system were said to have formed from - a nebular cloud of dust and gas - the protostar - dark matter - nuclear fusion

An object falls from high building and hits the ground in 13 second. Ingnoring air resistance, what is the distance that it fell?

A mass of 2000 kg is raised 2.0 m in 10 seconds. What is the potential energy of the mass at this height?

The spring constant, k, for a 22cm spring is 50N/m. A force is used to stretch the spring and when it is measured again it is 32cm long. Work out the size of this force.

A 1000-kg whale swims horizontally to the right at a speed of 6.0 m/s. It suddenly collides directly with a stationary seal of mass 200 kg. The seal grabs onto the whale and holds fast.

A baseball player is dashing toward home plate with a speed of 3.8 m/s when she decides to hit the dirt. She slides for 1.3 s, just reaching the plate as she stops (safe, of course).

The water that powers the generators enters and leaves the system at a low speed (thus we can neglect its change of kinetic energy) and loses 160 m of altitude during the process.

What is: the fastest car the fastest animal the fastest human the fastest aeroplane

Why is gravitational potential energy negative?

Imagine an elevator crowded with too many passengers for such a small space. This situation would be a good analogy for a substance with what property