You are designing an amusement park ride. A cart with two riders moves horizontally with a speed of 5.00 m/s. You assume that the total mass of cart plus riders is 300 kg. The cart hits a light spring that is attached to a wall, momentarily comes to rest as the spring is compressed, and then regains speed as it moves back in the opposite direction. For the ride to be thrilling but safe, the maximum acceleration of the cart during this motion should be 3.00g. Ignore friction.(a) What is the required force constant of the spring?(b) What is the maximum distance the spring will be compressed?

if the thermos has a vacuum innner, then heat through conv currents and conduction are reduced = vacuum flask

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it's when something is going so fast it makes a loud noise, breaking the sound barrier, for example: a jet makes a loud noise, not only cause of the jet but because they reached a point where they went so fast that you can year the noise from various parts, kinda like a police car, lets say the car was going   so fast that you hear the siren of the cop car right next to you, but the car is probably a mile a way, it's cos the siren was next to you a few seconds if you understand me

the components of a vector are the parts of the vectors that are to each other.

b perpendicular