oh i actually changed it and got
2.38×10^6 J
and then I found the other two answers, and they were both right I got the plane's kenetic energy was 3.43X10^6 J and the final was 5.81x10^6 J.
I still cannot find the last one. What is the new speed of the plane after the 6.5 seconds...
Homework Statement
A pure silver Lions fan throws a roll of toilet paper at 11.0 m/s from her seat at Ford's Field during a recent game. How fast is the 0.4 kg roll going when it strikes an opposition player 17.0 m below?
Homework Equations
1/2mv^2 = mgh <-- i think.
The Attempt at a...
Homework Statement
A 2175 kg test plane has an engine that can deliver a maximum power of 5.28×105 watts. The pilot hits the throttle when the plane is flying at 46.8 m/s and maintains maximum power for 6.5 seconds.
What is the plane's initial kinetic energy?
What is the plane's change in...
Homework Statement
A stone is thrown downward with a speed of 18 m/s from a height of 11 m. (acceleration due to gravity: 9.81 m/s2)
Your answers must be accurate to at least 1%. Give your answers to at least three significant figures.
a) What is the speed (in m/s) of the stone just before...
Homework Statement
Suppose that a man driving a BMW zooms out of a darkened tunnel at 39.2 m/s. He is momentarily blinded by the sunshine. When he recovers, he sees that he is fast overtaking a camper ahead in his lane moving at the slower speed of 15.7 m/s. He hits the brakes as fast as he...
Homework Statement
While exploring the canopy of the rainforest in equatorial South America, Anastasia falls from a branch 39.0 meters high. Exactly 0.8 seconds later Joe falls from the same branch. How high above the ground is Joe when Anastasia splats into the mud below? (the mud is very...