Question

QUESTION #1:if there were no gravity a ball thrown upward at an angle would follow a straight-line path. Due to gravity, however, at the end of 1 s it is?a.) 5 m below the straight lineb.) 10 m below the straight linec.) 15 m below the straight lined.) 20 m below the straight line QUESTION #2:if there were no gravity a cannonball fired upward at an angle of 45 degrees would follow a straight-line path. Due to gravity, however, at the end of 3 s it is?a.) 5 m below the straight lineb.) 10 m below the straight linec.) 20 m below the straight lined.) more than 20 m below the straight line

Answer 1

Q1.

The acceleration of the gravity is 9.81 meters per second per second. Assuming is falling from rest then it will have fallen from the straig light approimately:

$\begin{gathered} y=-\frac{1}{2}gt^2 \\ y=-\frac{1}{2}(9.81)(1)^2 \\ y=-4.905 \end{gathered}$

Therefore the answer is a.

Q2.

In this case the time is 3 s. then we have:

$\begin{gathered} y=-\frac{1}{2}(9.81)(3)^2 \\ y=-44.145 \end{gathered}$

Therefore the answer is d.