Posted by **Dakota** on Tuesday, March 15, 2011 at 11:10pm.

A 747 jetliner lands and begins to slow to a stop as it moves along the runway. If its mass is 3.50x^5 kg. Its speed is 27.0 m/s, and the net braking force is 4.30x10^5 N. (a)what is its speed 7.50 s later? (b)how far has it traveled in this time?

- physics -
**drwls**, Wednesday, March 16, 2011 at 2:14am
Use the braking force and F = ma to get the deceleration rate, a.

(a) After t= 7.5 seconds, the velocity will be

V(7.5) = Vo - a t

= 27.0 m/s - a*7.5

(b) Distance travelled at t = 7.5s

= (Average velocity)* time

= (1/2)*(Vo + V(7.5)) * 7.5s

- physics -
**ChingChongWong**, Thursday, June 2, 2011 at 9:33am
The answer is found with your teacher. Go ask your teacher

## Answer This Question

## Related Questions

- Physics - A 747 jetliner lands and begins to slow to a stop as it moves along ...
- physics - A 747 jetliner lands and begins to slow to a stop as it moves along ...
- physics - A 747 jetliner lands and begins to slow to a stop as it moves along ...
- Physics - A 747 jetliner lands and begins to slow to a stop as it moves along ...
- physics - A 747 jetliner lands and begins to slow to a stop as it moves along ...
- physics - A 747 jetliner lands and begins to slow to a stop as it moves along ...
- Physics - A 747 jetliner lands and begins to slow to a stop as it moves along ...
- Physics - a jetliner traveling northward is landing with a speed of 80 m/s. Once...
- Science collage - A jetliner lands at speed of 210 km/h and breaks at rate of 20...
- physics - A Boeing 747 “Jumbo Jet” has a length of 59.7 m. The runway on which ...

More Related Questions