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
Kisachek [45]
4 years ago
9

A 2 kg soccer ball is traveling 28.62m/s when it hits the wall and bounces off of the wall with a velocity of 20 m/s. If the wal

l exerted an average force of 652.36N on the ball, how long was the ball in contact with the wall?
Physics
1 answer:
Lesechka [4]4 years ago
5 0

Answer:

0.149 s or 0.15 s

Explanation:

let initially ball is moving towards left  hence initial velocity = - 28.62 m/s

final velocity as ball moves right = +20 m/s

force  = rate of change in momentum

force  = mass × change in velocity / time

or time = mass × change in velocity / force

    time = 2× ( 20 -( -28.62)) / 652.36

    time  = 2× ( 20  +28.62)) / 652.36  

time  =   2× 48 .62/652.36

 time =  0.149 s or 0.15 s

You might be interested in
Consider a field of insects, all of which have essentially the same mass.
Over [174]

If the total momentum of the insects is zero, this means all of the insects are at rest or are moving in opposite of each other. Same if the total kinetic energy is zero.

<h3>What is momentum? </h3>

Momentum is the quantity of motion which is multiplied by the amount of matter moved i.e., mass and the velocity at which it moves. Because, the object is in motion, it is a vector quantity, it has both direction and magnitude. It is determined by the product of the object's mass and the velocity of object.

If the total momentum of the insects is zero, this could mean anything of the two things. Either, all of the insects are at rest or an equal amount of insects are moving in opposite direction of each other which cancels out the total momentum of the insects.

If the total kinetic energy of the insects is zero, this means either all of the insects are at rest or an equal amount of insects are moving in opposite direction of one another which results into canceling out the energy.

Learn more about Motion here:

brainly.com/question/3421105

#SPJ1

7 0
2 years ago
A person strikes a ball with a bat. The temperature of the ball increases by 0.06ᵒC. What accounts for the increase?
marusya05 [52]

The increase in the average kinetic energy of the ball causes the increase in the temperature of the ball.

Kinetic energy of a particle is directly proportional to its temperature.

A ball initially at rest acquires kinetic energy when an external force is applied to it. As the person strikes the ball with a bat, the ball gains momentum which increases its kinetic energy of the ball.

Temperature on the other hand, is the measure of the average kinetic energy of a particle. Consequently, as the kinetic energy of the ball increases, the temperature of the ball increases as well.

Thus, we can conclude that the increase in the average kinetic energy of the ball causes the increase in the temperature of the ball.

Learn more here: brainly.com/question/18833622

6 0
3 years ago
In electroplating, the object to be plated is which part of an electrolytic cell? cathode or anode
Bingel [31]

Since the anode dissolves and goes to the cathode. The object to be electroplated is kept at the cathode.

Please mark me as brainliest.

7 0
3 years ago
Read 2 more answers
21. As a future healthcare professional, how could you use operant conditioning to minimize a patients’ fears or anxieties? (Rem
konstantin123 [22]

Answer:

Try to be their friend

Explanation:

Ask what sports they like

Connect to them

Tell them embarrassing stories that happened to you

Always say that everything will be okay

5 0
3 years ago
Henri Becquerel is credited with the discovery of:
Yuri [45]
Radium........ Hope this helps :)
5 0
3 years ago
Read 2 more answers
Other questions:
  • A constant braking force of 10 newtons applied for 5 seconds is used to stop a 2.5-kilogram cart traveling at 20 meters per seco
    6·2 answers
  • Four charges are fixed at the corners of a square centered at the origin as follows: q at (−a, +a); 2 q at (+a, +a); −3 q at (+a
    7·1 answer
  • An airplane pilot wishes to fly due west. A wind of 80.0 km/h (about 50 mi/h) is blowing toward the south. (a) If the airspeed o
    7·2 answers
  • (MC) What is the result of the Sun's light being refracted when it is high in the sky around noon?
    9·2 answers
  • If you push a 1000 kg box so in 2 seconds its velocity changes from 5m/s to 10 m/s how much force do you have to apply?
    7·1 answer
  • Define the difference between the Newtonian mechanics and a Lagrangian mechanics
    9·1 answer
  • why would granite have larger crystals than igneous rocks formed from lava cooled above Earth's surface
    7·1 answer
  • A man supports himself and the uniform horizontal beam pulling the rope with a force T.The weights of men and the beam are 883 N
    15·1 answer
  • At what point on the position-time graph shown is the object's instantaneous velocity smallest?
    7·1 answer
  • A 0.140-kg baseball traveling 34.0 m/s strikes the catcher's mitt, which, in bringing the ball to rest, recoils backward 19.0 cm
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!