Log in
Physics
1
answer
0
watching
140
views

Your physical education teacher throws a baseball to you at a certain speed and you catch it. The teacher is next going to throw you a medicinal ball whose mass is ten times the mass of the baseball. You are given the following choices:

You can have the ball thrown with 

(a) the same speed as the baseball

(b) the same momentum

(c) the same kinetic energy

Rank these choices from easiest to hardest to catch. 

Watch
1
answer
0
watching
140
views

For unlimited access to Homework Help, a Homework+ subscription is required.

John Edward Cayas
John Edward CayasLv10
11 Nov 2020

Unlock all answers

Get 1 free homework help answer.
Already have an account? Log in
Share

Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

hi,



i have 5 questions i need the
complete solutions with their final results. is there anyonecouldhelp
me, i would appreciate that.







1)
A 0.12-kg ball is moving at 6 m/s when it is hit by a bat,causingit to reverse direction and have a speed of 14 m/s. What isthechange in the magnitude of the momentum of the ball?








2)

Alex throws a 0.15-kg rubber ball down onto the floor. Theball'sspeed just before impact is 6.5 m/s, and just after is 3.5m/s. Ifthe ball is in contact with the floor for 0.025 s, what isthemagnitude of the average force applied by the floor ontheball?







3)

Lonnie pitches a baseball of mass 0.20 kg. The ball arrives athomeplate with a speed of 40 m/s and is batted straight back toLonniewith a return speed of 60 m/s. If the bat is in contact withtheball for 0.050 s, what is the impulse experienced by theball?








4)

A ball with original momentum +4.0 kg?m/s hits a wall andbouncesstraight back without losing any kinetic energy. The changeinmomentum of the ball is:







5)

A machine gun is attached to a railroad flatcar that rollswithnegligible friction. If the railroad car has a mass of 6.25 ?104kg, how many bullets of mass 25 g would have to be fired at 250m/soff the back to give the railroad car a forward velocity of0.5m/s?







thank you in advance

Two identical balls are thrown directly upward, boll A at speed v and boll B at speed 2v. and they feel no air resistance. Which statement about these balls is correct?

A) Ball B will go twice as high as ball A because it had twice the initial speed.

B) Ball B will go four times as high as ball A because it had four times the initial kinetic energy.

C) The balls will reach the same height because they have the same mass and the same acceleration.

D) At its highest point, ball B will have twice as much gravitational potential energy as ball A because it started out moving twice as fast.

E) At their highest point, the acceleration of each ball is instantaneously equal to zero because they stop for an instant

a.) A hockey puck is observed to be sliding along a flatfrictionless surface at a speed of 4 cm/min. There is no net forceacting on the puck. Assuming it doesn't smash into anything, howfast will the puck be going 17 min later?
cm/min

b.) An object is accelerating. Which one of the followingstatements is true?
The object must be speeding up.
Gravity must be causing the object to accelerate.
The object must be changing directions.
The object must be slowing down.
There is a net force acting on the object.

c.) A 100 kg block weighs 220 lb on Earth. If the block weretransported to a planetary body that had a smaller free fallacceleration (as compared to Earth), which one of the followingwould be true?
The block would have the same weight and a smaller mass.
The block would have the same mass and a bigger weight.
The block would have the same mass and the same weight.
The block would have the same weight and a bigger mass.
The block would have the same mass and a smaller weight.
d.) What does it mean (in physics) to say that a quantity isconserved?
It means that the quantity is not being used.
It means the total amount is zero.
It means the total amount never changes.
It means it's being saved up.

e.) At a certain point in time, the total energy of a closed systemis observed to be 176 J. Which one of the following statements istrue?
Three hours later the energy of the system is 352 J.
Four hours later the energy of the system is 88 J.
All of the energy must be kinetic if the objects are moving.
Twelve hours later the energy of the system is 176 J.
Some of the energy must be potential.

g.) Which of the following statements are impossible? Choose allthat apply.
The parked truck had 8770 J of KE.
The scooter had 0 J of KE and 0 kg·m/s of momentum.
A ball moving in a circle had 0 N of net force acting on it.
A box had an acceleration of 0 m/s2 while a net force of 311 Nacted on it.
Jack exerted 18 N of force due east on a cart. As a direct result,the cart exerted 18 N of force due west upon Jack.
A toothpick exerts a smaller gravitational force upon the Moon thanthe Moon exerts upon it.

a.) Two balls make up a closed system. Ball A has 701 J of energyand ball B has 78 J. After they collide, ball A has 665 J. How muchenergy does ball B have after they collide?
J

b.) An asteroid and a comet collide head on. Prior to thecollision, the asteroid has a momentum of 700,000 kg·m/s up and thecomet has a momentum of 800,000 kg·m/s down. After the collisionthe asteroid has a momentum of 750,000 kg·m/s down. After thecollision, what is the comet's momentum?
kg·m/s
North
South
East
West
Up
Down
Left
Right
No direction because the comet has stopped

c.) How much does a 28 kg object weigh on Moon? Please feel free toreference the Solar System Data table located at the beginning ofUnit II.
______N

d.) A 660 N net force acts on a 42 kg object. Determine theobject's acceleration.
_____m/s2

e.) Calculate the gravitational force between a 657 kg object(resting on Earth) and the Moon. The mass of the Moon is 7.347×1022kg and the distance between the object & the Moon is 3.844×108m.
____N

Weekly leaderboard

Home
Homework Help 3,900,000
Physics 110,000
Start filling in the gaps now
Log in