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
photoshop1234 [79]
2 years ago
11

An archer fires an arrow at an angle of 9° above the horizontal with a resultant velocity of 24 m/s

Physics
1 answer:
Natali [406]2 years ago
5 0

Answer:

Explanation:

Here is the complete question. An archer fires an arrow at an angle of 9° above the horizontal with a resultant velocity of 24 m/s, How high will it go? What horizontal distance will it travel?

To determine the maximum height it will go, we will use the formula for calculating the maximum height as shown;

H = u²sin²theta/2g

u is the velocity = 24m/s

theta is angle of launch = 9°

g is acceleration due to gravity = 9.8m/s²

Substitute

H = 24²(sin9°)²/2(9.8)

H = 576×0.0245/19.6

H = 14.0957/19.6

H = 0.719m

Hence the arrow can travel 0.719m High

The horizontal distance it will travel is known as RANGE. This is expressed as;

R = U²sin2(theta)/g

R = 24²sin18°/9.8

R = 576sin18°/9.8

R = 177.99/9.8

R = 18.16m

Hence the horizontal distance the arrow can travel is 18.16m

You might be interested in
MATCH THE NUMBER WITH THE APPROPRIATE VARIABLE <br> HELPP!!!!! its for my final
sergiy2304 [10]

Answer:

  1. velocity
  2. spéed
  3. distance
  4. displacement
  5. time

5 0
2 years ago
Why is detergent mixed in a toothpaste?
babymother [125]

because detergent has to clean dirt outa clothes and tooth pste also can help get stains outa cloths and when you put those two mixtures tofgether it can make the ultimate cleaning mixture

8 0
3 years ago
A steel ball rolls with a constant velocity on a tabletop 0.950 m high it rolls off and hit the ground 0.352 m from the edge of
sp2606 [1]

Answer:

0.799 m/s if air resistance is negligible.

Explanation:

For how long is the ball in the air?

Acceleration is constant. The change in the ball's height \Delta h depends on the square of the time:

\displaystyle \Delta h = \frac{1}{2} \;g\cdot t^{2} + v_0\cdot t,

where

  • \Delta h is the change in the ball's height.
  • g is the acceleration due to gravity.
  • t is the time for which the ball is in the air.
  • v_0 is the initial vertical velocity of the ball.
  • The height of the ball decreases, so this value should be the opposite of the height of the table relative to the ground. \Delta h = -0.950\;\text{m}.
  • Gravity pulls objects toward the earth, so g is also negative. g \approx -9.81\;\text{m}\cdot\text{s}^{-2} near the surface of the earth.
  • Assume that the table is flat. The vertical velocity of the ball will be zero until it falls off the edge. As a result, v_0 = 0.

Solve for t.

\displaystyle \Delta h = \frac{1}{2} \;g\cdot t^{2} + v_0\cdot t;

\displaystyle -0.950 = \frac{1}{2} \times (-9.81) \cdot t^{2};

\displaystyle t^{2} =\frac{-0.950}{1/2 \times (-9.81)};

t \approx 0.440315\;\text{s}.

What's the initial horizontal velocity of the ball?

  • Horizontal displacement of the ball: \Delta x = 0.352\;\text{m};
  • Time taken: \Delta t = 0.440315\;\text{s}

Assume that air resistance is negligible. Only gravity is acting on the ball when it falls from the tabletop. The horizontal velocity of the ball will not change while the ball is in the air. In other words, the ball will move away from the table at the same speed at which it rolls towards the edge.

\begin{aligned}\text{Rolling Velocity}&=\text{Horizontal Velocity} \\&= \text{Average Horizontal Velocity}\\ &=\frac{\Delta x}{\Delta t}=\frac{0.352\;\text{m}}{0.440315\;\text{s}}=0.0799\;\text{m}\cdot\text{s}^{-1}\end{aligned}.

Both values from the question come with 3 significant figures. Keep more significant figures than that during the calculation and round the final result to the same number of significant figures.

3 0
3 years ago
This property of waves is the only property where the relationship between energy and this property are indirect or inverse
yaroslaw [1]

Answer: I don't understand

Explanation:

study and pay attention

4 0
2 years ago
What is the relation between the direction of electric field and equipotential line at the same point
gavmur [86]

Answer:

The direction of electric field and equipotential line at the same point are always PERPENDICULAR TO THE ELECTRIC FIELD.

Explanation:

Equipotential surface is a three dimensional part of equipotential lines.

Equipotential lines are a type of contour lines that is use to trace lines that have the same altitude on the map and the altitude is the electric potential.

Equipotential lines are always perpendicular to electric potential because the lines creates three dimension equipotential surface.

5 0
3 years ago
Other questions:
  • The temperature of water in a beaker is 45°C. What does this measurement represent?
    13·1 answer
  • When she rides her bike, she gets to her first classroom building 36 minutes faster than when she walks. Of her average walking
    8·2 answers
  • A beetle crawls from x=1.09m to x=2.55m in 12.8s. what was the average velocity?
    12·1 answer
  • The potential difference between a pair of oppositely charged parallel plates is 398 V. If the spacing between the plates is dou
    14·1 answer
  • As your hand moves back and forth to generate longitudinal pulses in a spiral spring, your hand completes 3.19 back-and-forth cy
    15·1 answer
  • Consider a model of a hydrogen atom in which an electron is in a circular orbit of radius r = 5.92×10−11 m around a stationary p
    10·1 answer
  • What is the relation between inertia and mass?
    14·1 answer
  • 7. A box is being pushed from the left at 15N and pushed from the right at 10N,
    11·1 answer
  • 2. The word used to represent a chemical reaction is a/an a. Atom b. Formula O c. Equation d. Symbol​
    7·1 answer
  • Please help with this​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!