Answer :
Sure! Let's solve the problem step-by-step using the given formula:
We have the formula:
[tex]\[ v = \sqrt{2gh} \][/tex]
Where:
- [tex]\( v \)[/tex] is the velocity at which the hammer hits the ground, which is 8 feet per second.
- [tex]\( g \)[/tex] is the acceleration due to gravity, which is 32 feet per second squared.
- [tex]\( h \)[/tex] is the height above the ground from which the hammer was dropped.
We need to find [tex]\( h \)[/tex].
Firstly, let's rearrange the formula to solve for [tex]\( h \)[/tex]:
[tex]\[ v = \sqrt{2gh} \][/tex]
Squaring both sides to get rid of the square root:
[tex]\[ v^2 = 2gh \][/tex]
Now, solve for [tex]\( h \)[/tex]:
[tex]\[ h = \frac{v^2}{2g} \][/tex]
We know that:
- [tex]\( v = 8 \)[/tex] feet per second
- [tex]\( g = 32 \)[/tex] feet per second squared
Plug these values into the equation:
[tex]\[ h = \frac{8^2}{2 \times 32} \][/tex]
Calculating the values:
[tex]\[ h = \frac{64}{64} \][/tex]
[tex]\[ h = 1 \][/tex]
So, the height [tex]\( h \)[/tex] from which the hammer was dropped is:
[tex]\[ \boxed{1.0 \text{ foot}} \][/tex]
Therefore, the correct answer is:
B. 1.0 foot
We have the formula:
[tex]\[ v = \sqrt{2gh} \][/tex]
Where:
- [tex]\( v \)[/tex] is the velocity at which the hammer hits the ground, which is 8 feet per second.
- [tex]\( g \)[/tex] is the acceleration due to gravity, which is 32 feet per second squared.
- [tex]\( h \)[/tex] is the height above the ground from which the hammer was dropped.
We need to find [tex]\( h \)[/tex].
Firstly, let's rearrange the formula to solve for [tex]\( h \)[/tex]:
[tex]\[ v = \sqrt{2gh} \][/tex]
Squaring both sides to get rid of the square root:
[tex]\[ v^2 = 2gh \][/tex]
Now, solve for [tex]\( h \)[/tex]:
[tex]\[ h = \frac{v^2}{2g} \][/tex]
We know that:
- [tex]\( v = 8 \)[/tex] feet per second
- [tex]\( g = 32 \)[/tex] feet per second squared
Plug these values into the equation:
[tex]\[ h = \frac{8^2}{2 \times 32} \][/tex]
Calculating the values:
[tex]\[ h = \frac{64}{64} \][/tex]
[tex]\[ h = 1 \][/tex]
So, the height [tex]\( h \)[/tex] from which the hammer was dropped is:
[tex]\[ \boxed{1.0 \text{ foot}} \][/tex]
Therefore, the correct answer is:
B. 1.0 foot