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
Svet_ta [14]
3 years ago
14

A tennis ball traveling horizontally at a speed of 40 m/s hits a wall and rebounds in the opposite direction. The time Interval

for the collision is about 0.013 s, and the mass of the ball Is 0.059 kg. Assume that the ball rebounds at the same speed.
(a) Determine the initial and final momenta of the ball. Assume the initial velocity direction is positive.

(b) Determine the change In momentum of the ball.

(c) Determine the average force exerted by the wall on the ball.
Physics
1 answer:
liubo4ka [24]3 years ago
3 0

Answer

given,

initial velocity of the ball, u = 40 m/s

final velocity of the ball, v= -40 m/s

time of contact = 0.013 s

mass of the ball = 0.059 Kg

a) initial momentum

   P₁ = m u = 0.059 x 40 = 2.36 kg.m/s

  final momentum  

   P₂ = m v = 0.059 x (-40) = -2.36 kg.m/s

b) change in momentum

      Δ P = P₂- P₁

      Δ P = -2.36 - 2.36

     Δ P = -4.72 kg.m/s

c) Average force

 average force exerted by the ball is equal to change in momentum per unit time.

     F =\dfrac{\Delta P}{t}

     F =\dfrac{-4.72}{0.013}

            F = -363 N

You might be interested in
How does muscle fatigue affect the amount of work that muscles can do?
Ganezh [65]

Answer:

by straining that muscle it can slow down the amount of muscle your supposed to get

Explanation:

6 0
3 years ago
Read 2 more answers
every computer consists of physical components and non physical components the non physical component of a computer that underst
sp2606 [1]

Answer:

C. software

Explanation:

software, is a collection of data or computer instructions that tell the computer how to work. This is in contrast to physical hardware, from which the system is built and actually performs the work.

4 0
3 years ago
Please help me answer these questions ASAP !
vodomira [7]
1. Layer A is the oldest. The law of superposition says that the oldest layer is at the bottom whilst the newest is at the top.
2. The law of original horizontality.
3. The law of original lateral continuity.
3 0
3 years ago
Two balls, each with a mass of 0.5 kg, collide on a pool table. Is the law of conservation of momentum satisfied in the collisio
Dmitriy789 [7]

During the collision between two balls on the pool table there is no external force along the line of collision between them

Since there is no external force on it so here we can say

F = 0 = \frac{\Delta P}{\Delta t}

here we have

\Delta P = 0

so we can say

P_i = P_f

since there is no external force so we can say during the collision the momentum of two balls will remain conserved

7 0
3 years ago
Read 2 more answers
An object located near the surface of Earth has a weight of a 245 N
gayaneshka [121]

Answer:

ثر أنواع التربة خصوبة التربحمراء .

ج- السوداء

Explanation:

ggfvbdgbvgbbbfgb

7 0
3 years ago
Other questions:
  • Which is a characteristic property of acids? a. They turn blue litmus paper red. b. They turn red litmus paper blue. c. They tas
    10·1 answer
  • Which law states that the orbit of each planet is elliptical and that the Sun is at one focus of each ellipse? A. Kepler's first
    9·1 answer
  • Pictures below :) <br><br>Have a nice day!!​
    11·1 answer
  • A tennis ball is tossed upwards into the air with an initial velocity of +5m/s, how much time does it take for the tennis ball t
    9·1 answer
  • Reflection off of a smooth surface like a mirror is an example of diffuse reflection.
    6·2 answers
  • A man kicks the 150-g ball such that it leaves the ground at an angle of 60° and strikes the ground at the same elevation a dist
    8·1 answer
  • Q1: We drop this 0.1 kg apple 1 m. What speed does it hit the ground
    8·1 answer
  • A jogger runs 5 km in 0.6 h, then 9 km in 0.5 hr. What is the average speed of the jogger
    13·1 answer
  • Which of the following would have the smallest coefficient of kinetic friction when slid along your hang.
    6·2 answers
  • Country and country produce the consumption goods and capital goods and currently have identical production curvesthey also have
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!