Answer:
Approximately
.
Step-by-step explanation:
The velocity of an object is the rate at which its position changes. In other words, the velocity of an object is equal to the first derivative of its position, with respect to time.
Note that the arrow here is launched upwards. (Assume that the effect of wind on Mars is negligible.) There would be motion in the horizontal direction. The horizontal position of this arrow will stays the same. On the other hand, the vertical position of this arrow is the same as its height:
.
Apply the power rule to find the first derivative of this
with respect to time
.
By the power rule:
- the first derivative of
(same as - the first derivative of
(same as
to the second power) with respect to
Therefore:
.
In other words, the (vertical) velocity of this arrow at time
would be
meters per second.
Evaluate this expression for
to find the (vertical) velocity of this arrow at that moment:
.
Answer:
No, it is 45
Step-by-step explanation:
5*9=45
N=-3/20
In decimal form it would be n=-0.15
1/7 has an infinitely repeating decimal block of .142857 as its decimal expansion.
1/7 = .142857142857 ...
The repeating block has 6 digits in it. Note that the 7th digit of 1/7 is 1 which is the first digit of the repeating block.
To get the 2015th digit, divide 2015 by 6 and focus on the remainder.
2015/6 = 335 with a remainder of 5.
The 2015th digit of 1/7 will be the fifth digit of the repeating block 142857 which just happens to be 5.
Answer: 5