1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ziro4ka [17]
3 years ago
8

h(t) = - 16t2 + 64t + 112 where t is the time in seconds. After how many seconds does the arrow reach it maximum height? Round t

o the nearest tenth of a second if necessary. The arrow reaches its maximum height in seconds.
Physics
1 answer:
laila [671]3 years ago
8 0

Answer:

2 seconds

Explanation:

The function of height is given in form of time. For maximum height, we need to use the concept of maxima and minima of differentiation.

h(t)=-16t^{2}+64t+112

Differentiate with respect to t on both the sides, we get

\frac{dh}{dt}=-32t+64

For maxima and minima, put the value of dh / dt is equal to zero. we get

- 32 t + 64 = 0

t = 2 second

Thus, the arrow reaches at maximum height after 2 seconds.

You might be interested in
If a 4kg Bird is pushed by the window with a force of 60 N how fast is the bird accelerate?
LiRa [457]
  • Force=60N
  • Mass=4kg

\\ \ast\sf\hookrightarrow Force=Mass\times Acceleration

\\ \ast\sf\hookrightarrow Acceleration=\dfrac{Force}{Mass}

\\ \ast\sf\hookrightarrow Acceleration=\dfrac{60}{4}

\\ \ast\sf\hookrightarrow Acceleration=15m/s^2

3 0
3 years ago
Which of the following planets helped astronomers locate another planet?
worty [1.4K]

Answer: Pluto,Mercury

Explanation:

6 0
3 years ago
Calculate the heat added to 3kg of water if the temperature increases from 30 C to 60 C.
sweet-ann [11.9K]

Answer:  B is right

Explanation:  Heat Q =  m Cv ΔT = 3.0 kg · 4186 J / (kg·K) · 30 K≈ 376 740 J

5 0
3 years ago
A ladybug sits 14 cm from the center of a turntable spinning at 33.33 rpm. The Sun is shining horizontally through the window an
kolbaska11 [484]

Answer:

The maximum velocity is 0.489 m/s

Explanation:

Maximum velocity (v) = angular velocity (w) × radius (r)

w = 33.33 rpm = 33.33×0.1047 = 3.4897 rad/s

r = 14 cm = 14/100 = 0.14 m

v = 3.4897×0.14 = 0.489 m/s

3 0
3 years ago
A person with a gravitational force of 750 N is sitting in the centre of a hammock which is strung between two trees. The ropes
bija089 [108]

Answer:

Answer in photo

Explanation:

Answer in photo

8 0
3 years ago
Other questions:
  • The morning after a massive snowstorm, Michaela gets into her car to drive to work. The storm caused her windows to freeze, so s
    13·1 answer
  • If you hold a horizontal metal bar several centimeters above the ground and move it through grass, each leaf of grass bends out
    8·1 answer
  • How do you convert 750ml to liters?
    8·1 answer
  • A car is being towed at a constant velocity on a horizontal road using a horizontal chain. The tension in the chain must be equa
    15·1 answer
  • Small-plane pilots regularly compete in "message drop" competitions, dropping heavy weights (for which air resistance can be ign
    7·1 answer
  • A 14 kilogram beam is hinged at one end. A 6.0-kilogram triangular object and a 7.5-kilogram capital I-shaped object are placed
    8·1 answer
  • What does it mean to overcome gravity?
    9·1 answer
  • Country and country produce the consumption goods and capital goods and currently have identical production curvesthey also have
    15·1 answer
  • A ski resort consists of a few chairlifts and several interconnected downhill runs on the side of a mountain, with a lodge at th
    15·1 answer
  • URGENT!! ILL GIVE
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!