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
Sveta_85 [38]
3 years ago
5

A boy is inning with a kinetic energy of 810j. If the boy has a mass of 80kg. What is his speed ?

Physics
1 answer:
Eva8 [605]3 years ago
7 0
His speed is 4.5 m/s
You might be interested in
The friction force between a bag and the floor is 4 N. what is the net force acting on the bag? What is the acceleration of the
tester [92]
Well, if the bag is moving across the floor at a constant velocity. Then I would assume that the Fnet force is equal to 0, and thus the value of acceleration would also be equal to 0.
6 0
3 years ago
A rock has a specific gravity of 2.32 and a volume of 8.64 in3 how much does it weigh
lianna [129]

Answer: 3.21 N

Specific\hspace{1mm} gravity = \frac {Density\hspace{1mm}of\hspace{1mm}substance}{Density\hspace{1mm} of \hspace{1mm}water}

\Rightarrow Density \hspace{1mm}of\hspace{1mm}substance= 2.32\times 1000\hspace{1mm} kg/m^3 = 2320\hspace{1mm}kg/m^3\\ Mass =Density\times volume\\ \Rightarrow 2320 \hspace{1mm} kg/m^3\times 8.64 \hspace{1mm}in^3\times \frac {1.64\times10^{-5} m^3}{1\hspace{1mm}in^3}=0.328 kg

For weight, we will multiply by g=9.8 m/s^{-2}

weight= 0.328\times9.8=3.21\hspace{1mm}N

Hence, the rock would weigh 3.21 N.

3 0
3 years ago
Anger is to angry as fire is to what
finlep [7]
<span>Anger is to angry as fire is to blazing. </span>
4 0
3 years ago
Different units used to describe average velocity can be changed from one to another by the use of
lisov135 [29]
<span>Average velocity can be calculated by determining the total displacement divided by the total time of travel. The average velocity of an object does not tell us anything about what happens to it between the starting point and ending point. Average velocity is different from average speed because it considers the direction of travel and the overall change in position.</span>
4 0
3 years ago
Suppose a diving board with no one on it bounces up and down in a SHM with a frequency of 4.00 Hz. The board has an effective ma
kirza4 [7]

Answer:

I took 3*sqrt(10/83)= 1.110349815

And rounded to 1.11 Hz

Explanation:

7 0
3 years ago
Other questions:
  • How would the force of gravity between two objects change the distance between them were to double?
    7·2 answers
  • How much positive and negative charges is there in a cup of water?
    7·1 answer
  • What is the gravitational force between Mars and the sun? 7.43 × 1030 N 1.79 × 1026 N 1.65 × 1021 N 3.76 × 1032 N
    5·1 answer
  • calculate the time (in years) it would take to send a message to the Galactic Capitol located at the center of our Milky Way gal
    7·1 answer
  • You go to the playground and slide down the slide, a 3.6-m-long ramp at an angle of 40. ∘ with respect to horizontal. The pants
    10·1 answer
  • Jack is playing with a Newton's cradle. As he lifts one ball to position A and drops it, it impacts the other balls at position
    11·1 answer
  • a thin prism of 2 degree gives a deviation of 1.7 degree what is the refractive index of the material​
    5·1 answer
  • Find the acceleration of the blocks when the system is released. The coefficient of kinetic friction is 0.4, and the mass of eac
    5·1 answer
  • 34.1 grams / 1.1 mL =
    7·1 answer
  • What is the work required to raise a 20 Newton box from the surface of the earth to a height of 6 meters?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!