Aparticle is moving along the x-axis with velocity v(t) = sin2t. at time t = pi/2 it has position x = 3. find the total distance, s traveled by this particle on the interval 0 < = t < = pi.

8. why do radio telescopes convert radio waves (analog signals) to electrical (digital) signals for analysis? (hint: what did the article say about the advantages of digital signals? )

Aferris wheel is a vertical, circular amusement ride with radius 9 m. riders sit on seats that swivel to remain horizontal. the ferris wheel rotates at a constant rate, going around once in 9 s. consider a rider whose mass is 56 kg. at the bottom of the ride, what is the perpendicular component of the rate of change of the rider's momentum? at the bottom of the ride, what is the vector force exerted by the seat on the rider?

Name three different units of energy used to measure heat and describe what type of situations each is usually used.