Arunner hopes to complete the 10,000-m run in less than 30.0 min. after running at constant speed for exactly 27.0 min, there are still 1200 m to go. the runner must then accelerate at 0.20 m/s2 for how many seconds in order to achieve the desired time

the runner run at constant speed for 27 min

and total 1200 m distance remains after that

distance moved = 10000 - 1200 = 8800 m

now the speed of the runner is

now he has to cover rest of the distance in 3 min

so he will accelerate for t s

so his final speed is

now time to cover the distance is 3 min

after solving above equation

t = 6.3 s

so it will accelerate for t = 6.3 s

the temperature and the pressure affect solubility. temperature affects by changing the properties of the solvent. the increase in pressure increases solubility, the decrease in pressure decreases solubility.

no simpler subs form complex ones. synthesise = make