A 6.2 kg cannonball is fired from a 280 kg cannon. The cannon recoils with a velocity of 4.9 m/s. What is the velocity of the cannon ball when it leaves the cannon?

The us government wants to allocate billions of dollars in the next 10 years to assure our future energy security. the funds will be spread among a variety of possible energy resources. where do you think the government should put the greatest support: solar energy, wind energy, clean coal, oil exploration, gas exploration, or a combination of sources? are there other efforts that should be explored? support your position with cited information for both questions.

Alarge box of mass m is pulled across a horizontal frictionless surface by a horizontal rope with tension t. a small box of mass m sits on top of the large box. the coefficients of static and

Definition: this is the weighted average of all of the isotopes of an element.