The work required to accelerate an object initially at rest to a speed v f is W. What is the additional work needed to increase its speed from v f to 2 v f? W
W/2

2W

3W

none of them

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

hope this ! : )

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west

0.93xc=0.93x3x10^8m/s

2.54cm is 1 inch

360seconds i 1 hr