What did galileo's principle of inertia state?

A 20 g bullet is fired horizontally with a velocity of 250 m/s from a 1.5 kg rifle. If the rifle was held loosely, what would be the recoil velocity?

An Atwood machine is constructed using a disk of mass 2 kg and radius 24.8 cm. What is the acceleration of the system? The acceleration of gravity is 9.8 m/s 2. Answer in units of m/s 2.

Which medium is the greatest threat to the printed newspaper? a. Internet b. television c. radio d. e-mail

Suppose the average speed of a cheetah were just over 24.0 what distance would the cheetah cover during 18.4

3. A 16 kg barrel is lifted up by a rope. The barrel accelerates at 1.4 m/s2. Find the force exerted by the rope. Show all your work. Answer:

A sound from a source has an intensity of 270 db when it is 1 m from the source. what is the intensity of the sound when it is 3 m from the source?

What experimental term is it when a ruler is dropped to the floor?

Where is most of the energy from incoming waves focused? A. spit B. headland C. underwater D. barrier beach

Exoplanets (planets outside our solar system) are an active area of modern research. Suppose you read an article stating that there is a newly discovered planetary system with three planets.

A car with a mass 1200 kg accelerates at 1.89 m/s2. What is the total force exerted by the car on the road (answer in N to two decimal places) ?