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
egoroff_w [7]
2 years ago
6

In getting ready to slam-dunk the ball, a basketball player starts from rest and sprints to a speed of 5.45 m/s in 3.02 s. Assum

ing that the player accelerates uniformly, determine the distance he runs.
Physics
1 answer:
vova2212 [387]2 years ago
8 0

Recall that average velocity <em>v</em> is given by

<em>v</em> = ∆<em>x</em>/∆<em>t</em>

where ∆<em>x</em> is displacement and ∆<em>t</em> is time.

Under constant acceleration, average velocity is also equal to the average of the initial and final velocities,

<em>v</em> = (<em>v</em>₂ + <em>v</em>₁)/2

The player starts at rest, so <em>v</em>₁ = 0, and speeds up to <em>v</em>₂ = 5.45 m/s in a matter of ∆<em>t</em> = 3.02 s. So

∆<em>x</em> = (<em>v</em>₂ + <em>v</em>₁) ∆<em>t</em> / 2

∆<em>x</em> = (5.45 m/s) * (3.02 s) / 2

∆<em>x</em> ≈ 8.23 m

You might be interested in
In his explanation of the threshold frequency in the photoelectric field, Einstein reasoned that the absorbed photon must have t
Doss [256]

Answer:

4.6×10^-7 m or 0.46nm

Explanation:

From

Wo= hc/λ

Where:

Wo= work function of the metal

h= planks constant

c= speed of light

λ= wavelength

λ= hc/Wo

λ= 6.6×10^-34 × 3×10^8/4.30×10^-19

λ= 4.6×10^-7 m

5 0
2 years ago
What is the direction of the magnetic field if an electron moving in the positive x direction experiences a magnetic force in th
Alex787 [66]

Given :

An electron moving in the positive x direction experiences a magnetic force in the positive z direction.

To Find :

The direction of the magnetic field.

Solution :

We know, force is given by :

\vec{F}=q(\vec{v}\times \vec{B)}

Here, q = -e.

\vec{F}=(-e)(\vec{v}\times \vec{B)}\\\\\hat{k}=(-e)(\hat{i}\times \vec{B})

Now, for above condition to satisfy :

\hat{i}\times \vec{B}=-\hat{k}

So, \vec{B}=-\hat{j}

Therefore, direction of magnetic field is negative y direction.

Hence, this is the required solution.

7 0
3 years ago
What is the difference between an atom in the ground state and an atom in an excited state
SIZIF [17.4K]
The atom in an excited state has more energy and is less stable than the atom in the ground state.
7 0
3 years ago
Read 2 more answers
The towel has better blank
koban [17]

Answer:

D

Explanation:

Towels Absorb

5 0
3 years ago
Which is an example of current electricity?
anyanavicka [17]

Answer:

c

Explanation:

i think

4 0
2 years ago
Read 2 more answers
Other questions:
  • What are the units for the spring constant, k? A. newton meters B. newton seconds C. newtons/meter D. newtons/second E. newtons/
    10·2 answers
  • Can anyone help me for this question please?? I really need help someone!!!
    15·1 answer
  • Astronomy
    14·2 answers
  • The downward sliding characteristic of ridge-push is the result of
    15·1 answer
  • In what way are liquids different from
    10·2 answers
  • What do you see when you stand infront of a concave mirror, beyond its focal point, and look at yourself?
    9·2 answers
  • Bare free charges do not remain stationary when close together. To illustrate this, calculate the acceleration of two isolated p
    7·1 answer
  • What is one disadvantage of using a ramp?
    7·1 answer
  • Developed countries typically have _______.
    10·1 answer
  • The innermost satellite of jupiter orbits the planet with a radius of 422 × 103 km and a period of 1.77 days. what is the mass o
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!