A 50 kg box is resting on a horizontal surface. Determine the coefficient of kinetic friction between the box and the horizontal surface.

Describe an example of each of Newton's laws of motion that you experience before you get to school in the morning. Include some of the forces involved in each situation.

if a 10 kg object has a kinetic energy of 20 J what is its speed and what is the formula used to calculate speed

An object of mass of 78 kilograms is lifted through a height of 6 meters. How much work is done?

Galileo's three most important discoveries were? List and explain them

How do astronomers set about looking for extrasolar planets?

Protecting his nest, a 600-g peregrine falcon rams a marauding 1.5-kg raven in midair. the falcon is moving at 20.0 m/s, and the raven at 9.00 m/s at the moment of impact.

A carousel has a radius of 1.70 m and a moment of inertia of 110 kg · m2. A girl of mass 44.0 kg is standing at the edge of the carousel, which is rotating with an angular speed of 3.40 rad/s.

A 2kg marble is moving at 3 m/s when it strikes another 4kg marble moving in the opposite direction at - 3 m/s. What will be the velocity of the 4kg marble after the collision of the 2kg marble's new velocity is - 4 m/s.

How long did it take to reload a rifle during the 18th 19 century?

Hot spots in electronic and electric circuits can be detected visually with the use of A. dataloggers. B. thermocouples C. oscilloscopes D. infrared cameras.