Arock is thrown at a window that is located 18.0 m above the ground. the rock is thrown at an angle of 40.0° above horizontal. the rock is thrown from a height of 2.00 m above the ground with a speed of 30.0 m/s and experiences no appreciable air resistance. if the rock strikes the window on its upward trajectory, from what horizontal distance from the window was it released?

a. 29.8 m
b. 27.3 m
c. 48.7 m
d. 71.6 m
e. 53.2 m

To solve the problem it is necessary to apply the kinematic equations of linear descriptive motion. With the components of speed we can find both time and distance that separates them. The two components given are:

Applying the vertical displacement equation we have to

Replacing we have,

Solving for t,

Through the horizontal component we can find the displacement which is given as,

Therefore the correct answer is B.

heat the gas and measure the pressure

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.