Acertain sprinter has a top speed of 10.6 m/s. if the sprinter starts from rest and accelerates at a constant rate, he is able to reach his top speed in a distance of 11.9 m. he is then able to maintain his top speed for the remainder of a 100 m race. (a) what is his time for the 100 m race? (b) in order to improve his time, the sprinter tries to decrease the distance required for him to reach his top speed. what must this distance be if he is to achieve a time of 10.4 s for the race?

Initially, a particle is moving at 5.33 m/s at an angle of 37.9° above the horizontal. two seconds later, its velocity is 6.11 m/s at an angle of 54.2° below the horizontal. what was the particle's average acceleration during these 2.00 seconds in the x-direction (enter first) and the y-direction?

The sound level near a noisy air conditioner is 70 db. if two such units operate side by side, the sound level near the, would bea. 70dbb. 73 dbc. 105 dbd 140 db

Beryl states that insulation with the smallest possible thermal conductivity is best to keep a house warm in winter, but worst for keeping a house cool in summer. sapphire insists the reverse is true: low thermal conductivity is good in the summer, but bad in the winter. which one, if either is correct? a. beryl, because low thermal conductivity results in low heat transfer. b. beryl, because low thermal conductivity results in high heat transfer. d. sapphire, because low thermal conductivity results in high heat transfer. e. neither, because low heat transfer is desirable both in summer and in winter.