What does it mean to say that in any system the total energy score stays the
same

When a 5.0kg cart undergoes a 2.2m/s increase in speed, what is the impulse of the cart

Which of the the following are examples of projectile motion of both projectile motion and two dimensional motion

Abeverage can is made of 3004-h19 aluminum alloy (elastic modulus 69 gpa, tensile yield strength 285 mpa, density 2.72 g/cm^3). the dimensions on the can are approximated as a thin-walled cylinder with a height of 4.83 inches, diameter of 2.60 inches. empty the can has a mass of 14.2 g. determine: a. the wall thickness of the cylinder b. assuming a pinned-pinned condition what is the critical load? c. assuming a fixed-fixed condition what is the critical load?