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
Arada [10]
2 years ago
5

A 1.1 kg ball drops vertically onto a floor, hitting with a speed of 23 m/s. It rebounds with an initial speed of 5.0 m/s. (a) W

hat impulse acts on the ball during the contact
Physics
1 answer:
e-lub [12.9K]2 years ago
4 0

Hi there!

We know that:

I = Δp = m(vf - vi)

Plug in the given values. Remember to take into account direction ⇒ let the rebound velocity be positive and initial be negative.

I = 1.1(5 - (-23)) = 30.8 Ns

You might be interested in
Will is a scientist. He’s designing a spacecraft that would allow people to land on Mars. Will’s mass on Earth is 75 kilograms.
Vesnalui [34]
Mass will remain unchanged, always.  His weight, which is the gravitational force acting on that mass will be less in this case.
6 0
3 years ago
Read 2 more answers
A passenger jet flies from one airport to another 1,273 miles away in 2.2 h. find its average speed.
oee [108]
Speed : distance divide by time . 1273/2.2 = ...

Use calculator .
3 0
3 years ago
Read 2 more answers
How many significant digits are in the following measurements?<br> a. 1300 m
Fofino [41]

Answer:

For example, 1300 with a bar placed over the first 0 would have three significant figures (with the bar indicating that the number is precise to the nearest ten).

Explanation:

hope it helps :)

5 0
2 years ago
3. A sprinter leaves the starting blocks with an acceleration of 4.5 m/s2. What is the
UkoKoshka [18]

Hi there! :)

\large\boxed{v_{f} = 18 m/s}

Use the following kinematic equation to solve for the final velocity:

v_{f} = v_{i} + at

In this instance, the runner started from rest, so the initial velocity is 0 m/s. We can rewrite the equation as:

v_{f} = at

Plug in the given acceleration and time:

v_{f} = 4.5 * 4 = 18 m/s

5 0
3 years ago
A potential difference of 107 mV exists between the inner and outer surfaces of a cell membrane. The inner surface is negative r
sergij07 [2.7K]

Answer:

The workdone is  W = 1.712 *10^{-20 } \  J  

Explanation:

From the question we are told that

    The potential difference is  V  =  107 mV =  107 *10^{-3} \  V

Generally the charge on  Na^{+} is  Q_{Na^{+}} = 1.60 *10^{-19 } \  C

 Generally the workdone is mathematically represented as

         W =  Q_{Na^{+}}V

=>     W = 1.60 *10^{-19 } *  107 *10^{-3}    

=>     W = 1.712 *10^{-20 } \  J    

8 0
3 years ago
Other questions:
  • [9]
    10·1 answer
  • Which tool do we use to measure wind
    13·2 answers
  • Approximately how old is the earth?
    13·1 answer
  • How many significant figures are there in : (a) 0.000054 (b) 3.001 x 10^5 (c) 5.600
    7·1 answer
  • The school is about 1500 m away. you run toward the school with an average velocity of 3 m per sec. how long did it take you to
    11·2 answers
  • Boyle's Law states that when a sample of gas is compressed at a constant temperature, the pressure P and volume V satisfy the eq
    9·1 answer
  • How did Marie Curie’s research in radioactivity benefit others while harming her
    5·1 answer
  • Undisturbed samples from a normally consolidated clay layer were collected during a subsoil exploration. Drained triaxial tests
    6·1 answer
  • Which of the following statements about the Coriolis effect is correct?
    15·1 answer
  • 5. According to the law of reflection, the
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!