Blog

Horses that move with the fastest linear speed on a merry-go-round are located

A 20-ton truck collides with a 1500-lb car and causes a lot of damage to the car.  Since a lot of damage is done on the car

A 2 kg mass has 40 J of potential energy with respect to the ground. How high is it above the ground?

For a system in mechanical or static  equilibrium,

What is the centripetal acceleration of a point on the perimeter of a bicycle wheel of diameter 70.0 cm when the bike is moving 8.00 m/s?

Determine if the following statements are true or false about gravitational force:  The gravitational force acting upon an object at rest on a horizontal  surface is the same as the weight of the object.

Describe the energy of a car driving up a hill.

When a hard rubber rod is given a negative charge by rubbing it with wool:

How much work is required to stop an electron  ( m = 9.11 x 10 – 31 kg) (  which is moving with a speed of 1.90 x 10 6 m/s?  

An acorn falls from a tree.  Compare its kinetic energy K, to its potential energy U.