9. A runner accelerates uniformly form rest at 1.40 for 8.00s

a) What is her final velocity?

b) What is her average velocity

c) How far does she travel?

10. A car accelerates from rest at 6.65  . How far does it get between 10.0 and 14.0 s?

Solutions:

1. -2 ; 33.8 m        2.  61.4 m ; 3.02 s          3.  12 s         4. -4.4         5. 21.1 m/s ; -11.9 m/s       6. 21.9 s ; no, it reeds 1.26 km to land.         

7. -4.05 ; 4.44 s          8.  40 m/s           9. 11.2 m/s ; 44.8 m          10. 319 m

A car accelerates from rest to 30 mi./hr. in 4.8 seconds. Find:(a) the final velocity in ft./s., (b) the average velocity in ft./s., (c) the distance, and (d) the distance traveled in ft.

a train starts from rest and accelerates uniformly, until it has traveled 5.9km and acquired a velocity of 35m/s. The train then moves at a constant velocity of 35m/s for 400s. The train then decelerates uniformly at 0.065m/s^2, until it is brought to a halt. The acceleration during the first 5.9km of travel is closet to:

A sprinter in a 100-m race accelerates uniformly for the first 35 m and then runs with constant velocity. If the sprinter’s time for the first 35 m is 5.4 s, determine (a) his acceleration, (b) his final velocity, (c) his time for the race.