Homework Help: physics

Posted by kayla on Thursday, September 15, 2011 at 8:02pm.

An airport has runways only 142 m long. Asmall plane must reach a ground speed of 45 m/s before it can become airborne. What average acceleration must the plane’s engines provide if it is to take off safely from its airport?Answer in units of m/s2.

physics - bobpursley, Thursday, September 15, 2011 at 8:05pm
Vf^2=Vi^2+2ad solve for a
physics - kayla, Thursday, September 15, 2011 at 8:20pm
i do not understand that formula bob

i got 0.317 what do you get cause mine is wrong
physics - bobpursley, Thursday, September 15, 2011 at 8:29pm
Vf=45
Vi=0
d=142

45^2=2*a*142
solve for a.
Yep, yours is way wrong.

Answer this Question

Related Questions

physics - An airport has runways only 136m long. A small plane must reach a ...
physics - An airport has runways only 132 m long. A small plane must reach a ...
calculus - A pilot wishes to reach an airport 350 Km due east from his present ...
Calculus - A pilot wishes to reach an airport 350 Km due east from his present ...
physics - An engineer must design a runway to accommodate airplanes that must ...
physics- pls help me - 1. The driver of a car slams on the brakes when he sees a...
trig - A plane is flying at an elevation of 30000 feet. It is within sight of ...
PHYSICS - A Cessna 350 must reach a speed of 35 m/s for takeoff. If the plane ...
Physics - A jet plane lands with a speed of 110 m/s and can accelerate with a ...
physics - As you hurry to catch your flight at the airport, you encounter a ...

For Further Reading

First Name:
School Subject:
Answer: