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
densk [106]
3 years ago
13

8. A baseball is hit upward and travels along a parabolic arc before it strikes the se

Physics
1 answer:
Usimov [2.4K]3 years ago
8 0

d. The x-component of the velocity of  the ball is the same througout the  ball's flight

Explanation:

The motion of the baseball is a projectile motion, which consists of two independent motions:  

- A uniform motion (constant velocity) along the horizontal direction  

- A uniformly accelerated motion, with constant acceleration (acceleration of gravity) in the downward direction.

From this description, we can already see that the correct statement is D: in fact, there is no force acting in the horizontal direction on the ball (if we neglect air resistance), therefore the acceleration in the x-direction is zero, therefore the x-component of the velocity is constant.

The other statements are wrong because:

a.  The acceleration of the ball  decreases as the ball moves upward. --> false because the acceleration remains the same (g=9.8 m/s^2 downward)

b.  The velocity of the ball is zero m/s  when the ball is at the highest point  in the arc.​ --> false because only the y-component of the ball's velocity is zero at the highest point, but the x-component is not zero

c. The acceleration of the ball is zero  m/s when the ball is at the highest  point in the arc. --> false because the  acceleration remains the same (g=9.8 m/s^2 downward)

Therefore the correct answer is

d. The x-component of the velocity of  the ball is the same througout the  ball's flight

Learn more about projectile motion:

brainly.com/question/8751410

#LearnwithBrainly

You might be interested in
The cars on an amusement-park ride travel at a constant velocity of 4.0 m/s on a circular track
lys-0071 [83]
V^2=u^2+2as
V=0
a =-u^2/2s
a=[4]^2/2[4]
a=-2m/s^2
7 0
2 years ago
An airplane accelerates down a runway at 3 m/s2 for 32 s until is finally lifts off the ground. Determine the distance traveled
Alex Ar [27]

Answer:

12 or 24

Explanation:

i think it is i hope it is right

4 0
2 years ago
An object has a weight of 500 on earth what is the mass of this object
erastova [34]

550! OBVY! lol! ope this helps1

7 0
3 years ago
Speed differs from velocity in the same way that __________ differs from displacement.
lyudmila [28]

Speed differs from velocity in the same way that distance differs from displacement.

5 0
3 years ago
Read 2 more answers
Bohr analyzed the spectral lines of hydrogen.<br><br>true or false?​
trasher [3.6K]

Answer:

I think it is false. Johann balmer analyzed the spectral lines of hydrogen

6 0
2 years ago
Other questions:
  • Question 1
    12·1 answer
  • PLEASE HELP ASAP!! CORRECT ANSWER ONLY PLEASE!!
    5·2 answers
  • 5. A sled with no initial velocity accelerates at a rate of 5.0 m/s2 down a hill. How
    10·1 answer
  • How do lines of latitude affect how direct or indirect the Sun’s rays are on the Earth?
    13·1 answer
  • What is the possible consequence of the following scenario? Because of high unemployment rates in the country of Lavernia, emplo
    7·1 answer
  • A linear accelerator uses alternating electric fields to accelerate electrons to close to the speed of light. A small number of
    9·1 answer
  • The temperature of air changes from 0 to 10°C while its velocity changes from zero to a final velocity, and its elevation change
    8·1 answer
  • . The naturally occurring charge on the ground on a fine day out in the open country is –1.00nC/m2 . (a) What is the electric fi
    5·1 answer
  • The student lets the toy car roll down the slope. describe how the student could find, by experiment the speed of the toy car at
    5·1 answer
  • Which of the following helps in designing an attractive 3-D craft?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!