To pass a physical education class at a university, a student must run 1.0 miles in 12 min. after running for 10min, she still has 500 yd to go. if her maximum acceleration is 0.15m/s2, can she make it? if the answer is no, determine what acceleration she would need to be successful.

yes.

Explanation:

distance to run = 1 mile

in time = 12 min

student is left will 500 yd to go in 2 min

maximum acceleration = 0.15 m/s² = 590.22 yard/min

1 mile=1760 yards

distance covered 1760-500=1260 yards

speed of the student = 1260/10 = 126 yr/minute

we know

when the student accelerate at 0.15 m/s² he can easily cover 500 yrd in 2

minutes.

graphing motion: mastery test

209be

what is the instantaneous acceleration of

the particle at point b?

0 meters/second?

10 meters/second?

12 meters/second?

velocity imetersisecond

15 meters/second?

20

time (seconds)

answer: 0 meters/second^2

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2