Answer:
b. Its horizontal velocity component is the same as it was just as it was launched
Explanation:
When the rock is thrown from the upper edge of the cliff, at some angle with the horizontal. There is no any acceleration in horizontal direction, therefore, the horizontal velocity remains the same, whereas there is a constant downward acceleration of the magnitude g= 9.81 m/s^2. This causes the increase in vertical velocity of the rock in downward direction.
therefore true statement just before it hits the ground
b. Its horizontal velocity component is the same as it was just as it was launched.
Answer:
0.59 cm
Explanation:
height of cup (h) = 10 cm
radius of cup (r) = 10 cm
rate of change of water level (V') = 16π/3
rate of change of height (h) = 3 cm
the ratio of the height to radius (h:r) = 10:10
h/r = 10/10
h/r = 1
r=h
formula for volume of a volume (v) = .πh
substituting r=h into the formula above we have
v = .π. h = .π
differentiating the above we have
v' = 3(π)h' = π.h'
rearranging the above we have
h' = v' / (π)
where
- v' = rate of change of water level
- h' = rate of change of water level
- h = water level
h' = ((16 x π) / 3) ÷ ( π x )
h' = ((16 x 3.142) / 3) ÷ ( 3.142 x )
h' = 16.76 / 28.28
h' = 0.59 cm
Answer:
The velocity is 12 kilometers per hour
or it can be 0.0333333 kilometers per second
False
Step by step explanation