A) what is the frequency of the cart ? b) at what times the cart have a velocity of zero ?
c) at what times does the cart have an acceleration of zero ?
d) at what times does the cart have the most kinetic energy ?
e) at what times does the cart have the most potential energy ?

Ahot-air balloon takes off from the ground traveling vertically with a constant upward acceleration of magnitude g/4. after time interval δt, a crew member releases a ballast sandbag from the basket attached to the balloon. how many seconds does it take the sandbag to reach the ground? (express your answer in terms of δt)

Consider a file currently consisting of 200 blocks. assume that the file control block (and the index block in the case of indexed allocation) is already in memory. calculate how many disk i/o operations are required for contiguous, linked, and indexed (single-level) allocation strategies, for each of the conditions listed below. in the contiguous-allocation case, assume that there is not room to grow at the beginning but there is room to grow at the end. also assume that the block information to be added is stored in memory.

Atrain flies at a speed of 350 miles per hour how far will it travel in 3 hours