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
Nezavi [6.7K]
3 years ago
15

A basketball player is 4.22 m from

Physics
2 answers:
lianna [129]3 years ago
5 0

Answer:

3.10 m

Explanation:

Given;

Initial speed of ball u = 9.20 m/s

Angle θ = 69°

Horizontal distance from goal d = 4.22m

Resolving the initial velocity into horizontal and vertical components;

The horizontal component of the initial velocity;

uh = ucosθ

Substituting the given values;

uh = 9.2cos69°

uh = 3.30 m/s

The time taken for it to cover the horizontal distance of 4.22 m (to reach the goal);

Time = distance/speed = d/uh

time = 4.22/3.30 =. 1.279s

The time taken to reach the goal is 1.279 seconds.

To determine the height of the ball, we will resolve the vertical component of the initial velocity;

Vertical component of the ball velocity is;

Uv = usinθ

Uv = 9.20sin69°

Uv = 8.59 m/s

Applying the equation of motion;

Height h = ut - 0.5gt^2

Velocity u = Uv = 8.59 m/s

Time t = 1.279s

Acceleration due to gravity g = 9.8 m/s^2

Substituting the values;

h = 8.69(1.279) - 0.5(9.8×1.279^2)

Height h = 3.0988891 = 3.10 m

The height of ball above the release point is 3.10m

max2010maxim [7]3 years ago
3 0

Answer: The height above the release point is 2.96 meters.

Explanation:

The acceleration of the ball is the gravitational acceleration in the y axis.

A = (0, -9.8m/s^)

For the velocity we can integrate over time and get:

V(t) = (9.20m/s*cos(69°), -9.8m/s^2*t + 9.20m/s^2*sin(69°))

for the position we can integrate it again over time, but this time we do not have any integration constant because the initial position of the ball will be (0,0)

P(t) = (9.20*cos(69°)*t, -4.9m/s^2*t^2 + 9.20m/s^2*sin(69°)*t)

now, the time at wich the horizontal displacement is 4.22 m will be:

4.22m = 9.20*cos(69°)*t

t = (4.22/ 9.20*cos(69°)) = 1.28s

Now we evaluate the y-position in this time:

h =  -4.9m/s^2*(1.28s)^2 + 9.20m/s^2*sin(69°)*1.28s = 2.96m

The height above the release point is 2.96 meters.

You might be interested in
Why are the trends for electronegativity and ionization energy similar
Goshia [24]

Answer:

Explanation:

Ionization Energy Trends

Ionization energy is the energy required to remove an electron from a neutral atom in its gaseous phase. Conceptually, ionization energy is the opposite of electronegativity. ... As a result, it is easier for valence shell electrons to ionize, and thus the ionization energy decreases down a group

3 0
3 years ago
What is the resistance if the current is 15 amps and the voltage 105 volts
Ludmilka [50]
I think it’s R=U/I = 120/5 = 24
3 0
2 years ago
2. Grandma accelerates on her skateboard at 8 m/s/s. Her mass is 95 kg. What force does she exert to do this?
aleksandrvk [35]

Answer:

<h2>760 N</h2>

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

force = 95 × 8

We have the final answer as

<h3>760 N</h3>

Hope this helps you

8 0
2 years ago
After running, your friend lies down on a tile floor because he says the "coolness" of the tile transfers to his body. Is this s
GrogVix [38]

Answer:

oh this is tricky

Explanation:

this is false because the warmth of his body will transfer to the cool tiles

4 0
2 years ago
Which of the following describes the treatment in an investigation?
insens350 [35]

Answer:

Live training (whether through videoconference or a live course on a learning management system) or an eLearning course with knowledge checks is suggested so that learners can receive immediate feedback. Inclusion of a post-test – as well as an electronic guide describing jurisdiction-specific protocols – is strongly recommended.

Explanation:

5 0
2 years ago
Other questions:
  • you are sitting on a beach and a wave strikes the shore every 10 seconds. a surfer tells you that these waves travel at a speed
    6·1 answer
  • Brain-powered cars may most likely reduce
    14·1 answer
  • Match the environmental remedlation method to Its description.
    6·1 answer
  • To determine the types of equipment your boat must carry, you need to make a measurement of the boat. What is this measurement?
    8·1 answer
  • The reverse process of changing a liquid to a solid is called ............... or .................... . When a liquid change to
    7·2 answers
  • A 30.0 kg box hangs from a rope. What is the tension (in N) in the rope if the box has an initial velocity of 2.0 m/s and is slo
    10·1 answer
  • The site<br> of proteins is called what
    5·2 answers
  • Which of the following can be correct units for acceleration?
    6·1 answer
  • DON'T ANSWER IF YOU DON'T KNOW
    5·2 answers
  • Use the passage to answer the question.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!