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
Snowcat [4.5K]
3 years ago
13

below is the rule for calculating the velocity of a falling object. use this rule to calculate the rate, expressed in feet per s

econd, that a piano, dropped 3 seconds ago, is falling. v(t) = 32t
Mathematics
1 answer:
marshall27 [118]3 years ago
8 0
T=time
when the piano dropped at t=0, its velocity also equals 0
but at t(3)=32(3)=96
the piano is falling at 96fps
You might be interested in
Consider the initial value problem:
Inessa [10]

Answer:

\left \{ {{u'=v} \atop {v'=5v-6u-5\sin(2t)}} \right. \\u(0)=-5;u'(0)=2

Step-by-step explanation:

The given initial value problem is;

y''-5y'+6y=-5\sin(2t)---(1)\\y(0)=-5,y'(0)=2

Let

u(t)=y(t)----(2)\\v(t)=y'(t)----(3)

Differentiating both sides of equation (1) with respect to t, we obtain:

u'(t)=y'(t)---(4)\\ \\\implies u'(t)=v(t)---(5)

Differentiating both sides of equation (2) with respect to t gives:

v'(t)=y''(t)----(6)

From equation (1),

y''=5y'-6y-5\sin(2t)\\y''=5v(t)-6u(t)-5\sin(2t)\\\implies v'(t)=5v(t)-6u(t)-5\sin(2t)----(7)

Putting t=0 into equation (2) yields

u(0)=y(0)\\\implies u(0)=-5

Also putting t=0 into equation (3)

u'(0)=y'(0)\\u'(0)=2

The system of first order equations is:

\left \{ {{u'=v} \atop {v'=5v-6u-5\sin(2t)}} \right. \\u(0)=-5;u'(0)=2

3 0
3 years ago
An egg is dropped from a height of 90 ft. If acceleration due to gravity is –16 ft/s2 and initial velocity is 0 ft/s, approximat
stira [4]
2.4 s B ( i hope this help)
6 0
3 years ago
Read 2 more answers
What is the slope of the line, y=5−4x?
hoa [83]

Answer:

(m) =  

ΔY

ΔX

= 0

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
SQUARE ROOT OF 25<br><br>THANKS ​
guapka [62]

Answer:

5

Step-by-step explanation:

The square roots of 25 are √25=5 and −√25=−5 since 52=25 and (−5)2=25 . The principal square root of 25 is √25=5 .

3 0
3 years ago
Read 2 more answers
How do you solve 5+25:5x8-2
kodGreya [7K]

I hope I helped you

Step-by-step explanation:

First you solve: 25:5=?

After: the number you find×8=?

And:?+5=?

The number -2

7 0
3 years ago
Other questions:
  • Write an exponential function to model the following situation
    6·1 answer
  • Find the median<br> 45. 28 37 30 42 44 35 40
    8·2 answers
  • If the length, width, and height of a cube all change by a factor of 9, what happens to the volume of the cube?
    13·2 answers
  • The length of a rectangular window is 5 feet more than its width, w. The area of the
    12·1 answer
  • Simplify:<br> 4x^3 * 2x^3
    14·1 answer
  • Hello I need help on it ​
    8·2 answers
  • Heefuhufwiuhwttttttttttttttttttttttttt
    15·2 answers
  • 4. The measures of segment BS and segment PS are both 4.5 feet and m_PBS = 56°.
    8·1 answer
  • David Egil and frances share money in the ratio 2:7:9 Egil gets £85 more than David work out how much they each get ?
    8·1 answer
  • The ratio 20mins to 1 hour can be written in the form 1:n find the value of n.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!