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
Anna007 [38]
4 years ago
9

Help Please

Physics
2 answers:
Umnica [9.8K]4 years ago
5 0
Since the baseball is half the weight of the softball, the baseball has to go twice as fast as the softball.

So the best answer would be D
inessss [21]4 years ago
5 0

Answer:

D.) The baseball is thrown at 50 m/s and the softball is thrown at 25 m/s.

Explanation:

mass of ball 1

m_1 = 140 grams

mass of ball 2

m_2 = 280 grams

now we know that if the momentum of two balls are same then we will have

P_1 = P_2

m_1v_1 = m_2 v_2

so we have

140 v_1 = 280 v_2

v_1 = 2 v_2

so velocity of light ball must be twice the velocity of heavy ball

so correct answer will be

D.) The baseball is thrown at 50 m/s and the softball is thrown at 25 m/s.

You might be interested in
Energy is transmitted only in indivisible discrete quantities. True or False
alex41 [277]

Answer:

False

Explanation:

From the fact that light is emitted in portion, it does not follow that light ray is discrete in structure.

The way Einstein put it was that if a beer is always sold in pint bottles, that does not mean that beer contain of indivisible pint bottles. Yet experiments in which light  knocked electrons out of materials insistently made the point that light is absorbed only in the form of discrete portions. An emitted portion or quantum of light energy retains it's individuality in subsequent events as well.

This concept was first stated by Einstein in 1905. From the heuristic point of view that he developed light is always made up of discrete portions possessing energy and momentum.

5 0
3 years ago
A ball starts at rest and rolls down a ramp, developing a speed of 45 m/s in 7 seconds. Calculate the ball's acceleration.
Alexxx [7]

Answer:

6.429 m/s^2.

Explanation:

Using equations of motion,

i. vf = vi + at

ii. vf^2 = vi^2 + 2a*S

iii. S = vi*t + 1/2 * (a*t^2)

Where,

vf = final velocity of the motion

vi = initial velocity of the motion

S = distance travelled

t = time taken to complete the motion

a = acceleration due to gravity

Given:

vi = 0m/s

vf = 45 m/s

t = 7 s

a = ?

Using the i. equation of motion,

vf = vi + at

45 = 0 + a*7

a = 45/7

= 6.429 m/s^2

6 0
3 years ago
Describe how an adult can teach a child to become a racist or bigot using positive reinforcement and negative punishment. Make s
tatiyna

Answer:

by raising them in an environment in wich it is common and giving false information about other races to install bad stereo types and distrust in the child who will grow up to not know any better do to the dumb ignorant parent raised the same way

Explanation:

?????? thats all i got im not a politician BLM

6 0
4 years ago
Consider matrices in R 3×5 . What is the maximum possible number of linearly independent column vectors?
raketka [301]

Answer:

if a matrix 3 x 5 it does not imply that the column vector are linearly independent.

Explanation:

A 3 x 5 matrix represents a linear map R^5 to R^3. we have 5 columns vectors of R^3. they can never be linearly independent because the dimension of R^3 is 3.

5 0
3 years ago
Which of the following must ALWAYS be equal to the buoyant force on an object?
professor190 [17]

Answer:

A

Explanation:

I’m not sure but I hope this helped

8 0
3 years ago
Other questions:
  • Sara walks part way around a swimming pool. she walks 50 yards north, then 20 yards east, then 50 yards south. the magnitude of
    5·2 answers
  • Two vectors, X and Y, form a right angle. Vector X is 48 inches long and vector Yis 14 inches long. The length of
    10·1 answer
  • The point on the earth's surface directly above the point where the fault first ruptures is called the ____________.
    5·1 answer
  • Haverá algum movimento de carga ao ligar duas esferas condutoras M e N de volumes diferentes, mas com a mesma cara?
    12·1 answer
  • An engineer claims that solar cells for the generation of electrical power can never meet our high demand for electrical energy.
    13·1 answer
  • A coil of self- induction 0.5 H, its ohmic resistance is 10 ⦠carrying a dc current of intensity 2 A, The voltage at its termin
    14·1 answer
  • Why is si system better than CGS system​
    12·2 answers
  • A balloon filled with helium gas has an average density of Q,-0.41 kg/m'. The density of the air is Qa-1.23 kg/m3. The volume of
    9·1 answer
  • Which of the following types of energy is potential energy A. gravitational energy
    6·1 answer
  • Suppose a=3i-2j+k b=-i-4j+3k and c is avector lying along positive x axis with the property that a(b+c)=0 then find c?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!