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
exis [7]
3 years ago
5

a 2.5kg mass is held above the ground and has 50 J of gravitational potential energy. the mass is then dropped and accelerates t

o the ground. find the speed that the mass has when it collides with the ground
Mathematics
1 answer:
SVETLANKA909090 [29]3 years ago
6 0

Answer:

6.3m/s

Step-by-step explanation:

<u>Note: We will take g as 9.8 in this question.</u>

The two equations we will use for this questions are:

G.P.E = mgh, m = mass, g = acceleration due to gravity

and the SUVAT equation: v^2=u^2+2as

First, let's start out by finding the height from which the object is being dropped. We can do this by using the gravitational potential energy formula.

Subbing the values we have:

50 = 2.5*9.8*h

h = 2.04 - re-arranging for the height we get a height of 2.04.

Now we will use the SUVAT equation. Let's set out the variables we have:

S=2.04\\U=0\\V=?\\A=9.8\\T=N/A

U (initial speed) is equal to 0 because we are dropping the object from rest. Acceleration is equal to 9.8 as that is the acceleration due to gravity. The displacement (S) is the height we just worked out.

Now let's put them into one of the SUVAT equations:

v^2=u^2+2as

v^2=(0)^2+2(9.8)(2.04)

v^2=39.984

v=6.3 m/s

You might be interested in
PLEASE HELP ME ON THIS
Alex73 [517]
It's B the second one
6 0
3 years ago
Read 2 more answers
HELP PLEASE<br><br> write in standard form<br><br> 0.00000000485
Anna35 [415]

Answer:

4.85×10^-9

Step-by-step explanation:

can u get it ?

5 0
3 years ago
How do I sovle this Please help
elena-s [515]

Answer:

sup

Step-by-step explanation:

8 0
3 years ago
10 POINTS !
sesenic [268]

Gradient= -3/2 Equation: Y=mx+c Y=2 , X=8

So you substitute the numbers in

2=(-3/2) x 2 + c (then you backtrack to solve for c which is the y intercept)

2=-3+c

5=c So the equation should be Y=-3/2x+5

5 0
3 years ago
Read 2 more answers
What is the slope intercept
Pie

Answer:

rise is 20 and run is 5 so slope is 4.

I think the slope y-intercept is -5

4 0
3 years ago
Other questions:
  • What two numbers are multiplied to equal 169
    5·2 answers
  • a square as 9 inch sides. every side of a pentagon is also 9 inches long. are their perimeters the same? explain your answer.
    7·1 answer
  • Lisa was finding the median of the heights of the people in her family: 54 inches, 48 inches, 68 inches, 67 inches, 73 inches. S
    7·1 answer
  • Can I please get some help
    6·1 answer
  • Carmen used a random number generator to simulate a survey of how many children live in the households in her town. There are 1,
    5·1 answer
  • NEED HELP HELP Jada created the following t-chart when she solved an equation. What is<br> missing?
    5·1 answer
  • Find exact radius of circle please help!
    6·1 answer
  • Plzzz help me im trustin yall
    5·2 answers
  • Word problem with multiplication and
    10·1 answer
  • Help someone with both of these ASAP thank you!!
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!