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
Alina [70]
3 years ago
6

A tennis player smashes a ball of mass m horizontally at a vertical wall. The ball rebounds at the same speed v with which it st

ruck the wall. Has the momentum of the ball changed, and if so, by how much?
Physics
1 answer:
jeka57 [31]3 years ago
3 0

Answer:

The magnitude of change in momentum is (2mv).

Explanation:

The momentum of an object is given by the product of mass and velocity with which it is moving.

Let the mass of ball is m. A tennis player smashes a ball of mass m horizontally at a vertical wall. The ball rebounds at the same speed v with which it struck the wall.

Initial speed of the ball is v and final speed, when it rebounds, is (-v). The change in momentum is given by :

p = final momentum - initial momentum

p=-mv-mv\\\\p=-2mv

So, the magnitude of change in momentum is (2mv).

You might be interested in
On a trip to Italy, Cheyne rented a car to tour the country. As he turned onto the highway, he noticed that the speed limit was
KATRIN_1 [288]
1 mile = 1.609344 km
x miles = 95 km
x = 95 : 1.609344 = 59.03
Answer: 53.09 mph
6 0
3 years ago
If an object is thrown upward with an initial velocity of 128 ​ft/second, then its height after t seconds is given by the follow
IrinaK [193]

Answer:

The maximum height attained by the object and the number of seconds are 128 ft and 4 sec.

Explanation:

Given that,

Initial velocity u= 128 ft/sec

Equation of height

h = 128t-32t^2....(I)

(a). We need to calculate the maximum height

Firstly we need to calculate the time

\dfrac{dh}{dt}=0

From equation (I)

\dfrac{dh}{dt}=128-64t

128-64t=0

t=\dfrac{128}{64}

t=2\ sec

Now, for maximum height

Put the value of t in equation (I)

h =128\times2-32\times4

h=128\ ft

(b). The number of seconds it takes the object to hit the ground.

We know that, when the object reaches ground the height becomes zero

128t-32t^2=0

t(128-32t)=0

128=32t

t=4\ sec

Hence, The maximum height attained by the object and the number of seconds are 128 ft and 4 sec.

3 0
3 years ago
Define bond length using your own words​
Brut [27]

Answer:

the free encyclopedia. In molecular geometry, bond length or bond distance is defined as the average distance between nuclei of two bonded atoms in a molecule. It is a transferable property of a bond between atoms of fixed types, relatively independent of the rest of the molecule.

Explanation:

6 0
3 years ago
Four examples of compounds which are classed as carbohydrate​
Solnce55 [7]

Answer:

Carbohydrates are divided into four types: monosaccharides, disaccharides, oligosaccharides, and polysaccharides. Monosaccharides consist of a simple sugar; that is, they have the chemical formula C 6 H 12 O 6. Disaccharides are two simple sugars. Oligosaccharides are three to six monosaccharide units, and polysaccharides are more than six.

6 0
3 years ago
What is occurring when a light wave goes through a pane of glass in a window?
ycow [4]

Answer:

transmission: the passing of a wave through an object

Explanation:

5 0
2 years ago
Other questions:
  • A certain lightbulb has a tungsten filament with a resistance of 20.3 Ω when at 20.0°C and 135 Ω when hot. Assume the resistivit
    6·1 answer
  • 9) At a construction site, a small crane is raising two boxes of nails on a plank to the roof. One box has already been opened a
    12·2 answers
  • When a ball strikes a surface , it changes its shape temporarily, what type of energy is stored with the ball as it is compresse
    10·1 answer
  • Would an opah be better suited to live in cold water or warm water? explain
    15·1 answer
  • Coal is generally formed from high heat and pressure turning _____________ into a fossil fuel. oil and natural gas are generally
    14·1 answer
  • A ball which is dropped from the top of a building strikes the ground with a speed of 30m/s. Assume air resistance can be ignore
    9·1 answer
  • 009 10.0 points
    9·1 answer
  • Which sentence below describes a contact force? A) A baseball bat hits a ball B) A book falls to the floor C) A leaf floats in t
    9·1 answer
  • Which symbol and unit of measurement are used for electric current? symbol: A; unit: I symbol: C; unit: A symbol: I; unit: C sym
    6·2 answers
  • Sheila weighs 60 kg and is riding a bike. Her momentum on the bike is 340 kg • m/s. The bike hits a rock, which stops it complet
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!