Homework Help: Physics(check)

Posted by Jon on Sunday, March 30, 2008 at 4:23pm.

9)You are taking a road trip to the beach for Spring Break. You leave at 12:00pm. At 12:10 you stop for lunch 10 miles down the road. You get back on the road and travel 75 more miles and realize that you need to stop for gas. You notice that it is now 1:10pm. At this point in the trip, what is your average velocity in miles per hour?

10)An airplane must achieve a velocity of 71 m/s to takeoff. If the runway is 1000m long, at what speed must the plane constantly accelerate?

0.071 m/s^2

Physics(check) - Quidditch, Sunday, March 30, 2008 at 5:22pm
Checking your answer for 10:
For an initial velocity of 0, final velocity can be expressed as:
V = SQRT(2 * acceleration * distance)

Using your answer of 0.071 m/s:
V = SQRT(2 * (0.071 m/s^2) * 1000m)
V = SQRT( 142.0 m^2/s^2)
V = 11.92 m/s
Uh-oh! Not enough velocity by the end of the runway!
Physics(check) - Jon, Sunday, March 30, 2008 at 6:18pm
2.52 for #10
- Physics(check) - Quidditch, Sunday, March 30, 2008 at 6:25pm
  Yes!
  2.52 m/s^2 is what I got also.

Answer this Question

Related Questions

Physics - You are taking a road trip to the beach for Spring Break. You leave at...
physics repost - 9)You are taking a road trip to the beach for Spring Break. You...
Time Zones - Check my work. Calculate the correct time in brackets: 1. 1:00am at...
gen - this is my schedule I made up.. What does everyone thing? I do take breaks...
Physic Help - In heavy rush-hour traffic in Atlanta, you drive in a straight ...
Physics - On your wedding day you leave for the church 28 minutes before the ...
math - The question says .. match the equivalent addition and subtraction ...
math - The question says .. match the equivalent addition and subtraction ...
Geography - If the sun is directly overhead at 12 noon at yur location and GMT (...
Math PLEASE HELP - Please finish these questions so I can check my answers. All ...

For Further Reading

First Name:
School Subject:
Answer: