Answer:
1120ft^3
Step-by-step explanation:
Answer:
v = 39.2 m/s
Step-by-step explanation:
They gave you the equation for velocity during freefall in picture2 as:
v = 9.8t m/s
they ask you what the value of v (velocity) is after t=4 sec.
Just plug in t=4 into the equation.
v = 9.8t
v = 9.8(4)
v = 39.2 m/s
Answer:


Step-by-step explanation:
By geometric mean property:

I think it's 64. Not positive, but pretty sure it is.
Answer:
The grinding of the material
Step-by-step explanation: