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
Alika [10]
3 years ago
8

A ball is rolling a 5 m/s down a hill the ball has 20 J of energy what is the mass of the ball

Physics
1 answer:
Dmitriy789 [7]3 years ago
7 0

Its 1.6 kg

Remember

E = 1/2mv^2 is the kinetic energy of the ball. The energy is given to you so you need to solve for mass. Rearranging the equation gives you 2E/v^2 = 1.6

You might be interested in
Please select the word from the list that best fits the definition
vagabundo [1.1K]

Answer:input work

Explanation:

7 0
3 years ago
Read 2 more answers
You have been called in by your neighborhood safety council to advise them about installing a barrier on a dangerous curve that
Alborosie

Answer: The softer barrier is the better option

Explanation:

1) When is a car is moving at a certain speed, it has a certain amount of momentum (p=mv). A collision against a barrier would cause its momentum to decrease to 0. A change in momentum is Impulse

2) The formula for Impulse: J = f * Δt

J is Impulse

f is the force applied during the time Δt

A tough barrier would produce a smaller Δt, which means more force is applied on the car. (J is always constant)

A softer barrier would apply less force on the car, which means Δt is large.

Answer: The softer barrier is the better option

4 0
3 years ago
A graph of angular position v. time has the following equation:
Harman [31]

Answer:

you can simply answer by derivative = 3.5x^2+25x+250-y=0 you can derivate this eqn 7x +25-1=0 7x=24 yo u can divide you get it

5 0
3 years ago
The three types of nuclear radiation<br>​
Eva8 [605]
The three types are alpha beta and gamma
6 0
4 years ago
What is the current hypothesis on how the earths moon formed
Gwar [14]
The earth and moon were created By a collision between two planetary objects Each five time the size of mars. Is the newest hypothesis. 
4 0
3 years ago
Read 2 more answers
Other questions:
  • A 25 N force at 60° is required to set a crate into motion on a floor. What is the value of the static friction?
    13·1 answer
  • Is a lump of coal chemical energy
    14·1 answer
  • which part of a circuit creates an electric force field that makes it possible for the circuit to work
    12·1 answer
  • Given equation is F=mv ×v/R<br> what is the relationship exist between F and R?
    11·1 answer
  • Write down Newton's second law in terms of momentum and acceleration. Write down this law in the form of differential equation (
    8·1 answer
  • In which of the following situations would be the government had been most likely to become involved in union protests?
    6·1 answer
  • All light waves move through a vacuum with a constant speed. True or False
    8·1 answer
  • A father racing his son has 1/2 the kinetic energy of the son, who has 1/4 the mass of the father. The father speeds up by 1.4 m
    15·1 answer
  • Electrons and protons travel from the Sun to the Earth at a typical velocity of 3.83 ✕ 105 m/s in the positive x-direction. Thou
    5·1 answer
  • Which of the following effects results from the interference of two sound
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!