PHYSICS HIGH SCHOOL

A 0.89 kg ball is moving horizontally with a speed of 3.8 m/s when it strikes a vertical wall. The ball rebounds with a speed of 1.3 m/s. What is the magnitude of the change in linear momentum of the ball?

Answers

Answer 1
Answer:

Answer:

The change in momentum, p = -4.539 kg-m/s

Explanation:

It is given that,

Mass of the ball, m = 0.89 kg

Initial speed of the ball, u = 3.8 m/s

Final speed of the ball, v = -1.3 m/s (as it rebounds)

Let p is the change in linear momentum of the ball. We know that the linear momentum is equal to the product of mass and velocity. It is given by :

p=m(v-u)

p=0.89\ kg* ((-1.3)-3.8)\ m/s

p = -4.539 kg-m/s

So, the change in linear momentum of the ball is 4.539 kg-m/s. Hence, this is the required solution.

Related Questions

I need these ASAP Thank you c:1) The outer electrons in an element are referred to as _____. A) valence electrons B) ground state electrons C) excited electrons D) none of the above 2)In an exothermic reaction, the products have _____. A) more energy than the reactants B) less energy than the reactants C) the same amount of energy as the reactants 3)A static charge is different from an electric current, in that a static charge _____. A) is a flow of electrons B) lasts only for a fraction of a second C) occurs because a force is exerted on the electrons D) involves the movement of ions as well as electrons 4)The time that it takes for a wave to travel one wavelength is considered a(n) _____. A) period B) velocity C) amplitude D) rarefaction (This is for Integrated Physics and Chemisty)
A rod of mass M = 116 g and length L = 49 cm can rotate about a hinge at its left end and is initially at rest. A putty ball of mass m = 14 g, moving with speed V= 6 m/s, strikes the rod at angle A = 37º a distance D=L/4 from the end and sticks to the rod after the collision. (A) What is the total moment of inertia, 1, with respect to the hinge, of the rod-ball-system after the collision? (B) Enter an expression for the angular speed w of the system immediately after the collision, in terms of m, V, D, 0, (C) Calculate the rotational kinetic energy, in joules, of the system after the collision
Recall that the height of an object t seconds after it begins moving when gravity is the only force acting on the object is given. h(t)=-16x^2 + v0t + h0. h(t) is given in feet. v0 = initial velocity of object in ft/sec. ho= initial height of object in feet. If the feather is dropped from the top of the bridge 90 feet above a river, how long does it take the feather to reach the water?
3. An astronaut lands on an alien planet. He places a pendulum (L = 0.200 m) on the surface and sets it in simple harmonic motion, as shown in this graph.Answer the following questions:a. What is the period and frequency of the pendulum’s motion?b. How many seconds out of phase with the displacements shown would graphs of the velocity and acceleration be?c. What is the acceleration due to gravity on the surface of the planet in m/s2? Determine the number of g-forces. Show any necessary calculations.Answer:
Using a cathode ray tube, Thomson confirmed thatatoms must have an overall positive charge. atoms are made of particles that have a negative charge. electrons in atoms must have varying amounts of energy. electrons are only found in the nucleus.

A closed conducting loop through which an electrical current can flow is which of the following?a. resistance
b. circuit
c. voltage
d. electrical pressure

Answers

b. circuit
Think of it like this: A loop is a CIRCle, and thus is a CIRCuit.

What kind of glass is used for car head lamp​

Answers

Answer:

borosilicate glass

Explanation:

headlamp glass is a borosilicate glass by gravity feed

Find the speed of sound in air that is 30.0°C.

350

314

18

Answers

Answer:

v = 350 m/s

Explanation:

The speed of sound depends on the temperature of surrounding. The relation between the speed of sound and the temperature is given by :

v=331+0.61T

Where, T is temperature in Celsius

Here, T = 30 degree Celsius

v=331+0.61* 30

v = 349.3 m/s

or

v = 350 m/s

Therefore, the speed of sound in air at 30 degrees Celsius is 350 m/s.

Answer:

the answer is 350 m/s

Explanation:

Imagine you are holding an apple. Does this apple have energy?how do you know?

Answers


-- The apple has heat energy.  If its temperature were Absolute Zero,
then the skin on my hand would freeze instantly and fall off.

-- The apple has potential energy, relative to the ground.  If I were to
release it out of my hand, gravity would do work on it and pull it with
some speed to the ground, where it would have the kinetic energy to
break some blades of grass and dig a small crater in the soil.

-- The apple has chemical energy which, if I were to expose it to
human digestion and metabolism by eating it, would change to
glucose, soak into my muscles, and make itself available to me
whenever I need vim and vigor, mental alertness, visual acuity,
and the wherewithal to to escape any unexpected beast that might
in turn set upon me with the intention of converting MY entire person
into food energy for its own use.

A block of metal initially at 25°C is submerged in water initially at 75°C in a coffee cup. Which of the following is true? a. The final temperature of the coffee cup will be less than 20°C.
b. The final temperature of the coffee cup will be higher than 25°C but less than 75°C.
c. The final temperature of the coffee cup will be more than 80°C.
d. The final temperature of the coffee cup will be 80°C.

Answers

Answer:

b. The final temperature of the coffee cup will be higher than 25°C but less than 75°C.

Explanation:

We know in thermal equilibrium.

Heat loss by one object = Heat gain by other object.

Now, heat is loss by the object whose temperature is higher than other because heat travels from high temperature to other.

And the object who gain heat its temperature increases till both body reach same temperature.

In this case, water loss heat, therefore its temperature decreases.

Similarly , metal block is at low temperature so its temperature increases.

Therefore , both water and metal block must have temperature less than 75^0C and 25^0C to have thermal equilibrium.  

A wave x meters long has a speed of y meters per second. The frequency of the wave isa. x/y hertz
c. y x hertz
b. y/x hertz
d. y x hertz

Answers

The correct answer is (b.) y/x hertz. That is because the formula to get the frequency is f =  v / w. The following values (v=y meters / second; wavelength = x meters) must be substituted to the equation, which leaves you y/x hertz.

Answer:

b. y/x hertz

Explanation:
Other Questions
A box weighing 18 N requires a force of 6.0 N to drag it at a constant rate. What is the coefficient of sliding friction?
SCIENCE HELP If you are applying a force to an object and another person is applying another force to the object what is going to happen to the object? Construct your hypothesis using an “If…, then…” statement.
The greater the___of the object, the greater the force needed to achieve the same change in motion.
If light travels from oil (slower medium) to water (faster medium) at an angle, what happens to the direction of the light ray in water with respect to normal?A. It moves away from the normal. B. It moves toward the normal. C. It will move along the normal. D. It will move perpendicular to the normal. E. It stops traveling.