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
tino4ka555 [31]
2 years ago
10

A person applies an impulse of 5.0 kg∙m/s to a box in order to set it in motion. If the person is in contact with the box for 0.

25 s, what is the average force exerted by the person on the box?
Physics
1 answer:
Ivahew [28]2 years ago
0 0

Answer:

F = 20 N

Explanation:

given,

Impulse, I = 5 Kg.m/s

time of contact, t = 0.25 s

Average force = ?

we know force is equal to change of momentum per unit time.

impulse is equal to change in momentum.

F = \dfrac{dP}{dt}

F = \dfrac{I}{t}

F = \dfrac{5}{0.25}

F = 20 N

The average force exerted by the person on the box is equal to F = 20 N

You might be interested in
To produce work a gas is expanded adiabatically from 3 MPa and 300oC to 80 kPa in a piston-cylinder device. Which of these two c
ANEK [815]

Answer:

Explanation:

Check attachment for solution

Given that, .

The initial gas pressure is

P1 = 3 MPa

The initial gas temperature

T1 = 300°C

The final gas pressure is

P2 = 80 KPa

Which are of two choices

1. Air with an isentropic expansion of 90% efficiency

2. Neon with an isentropic expansion of 80% efficiency

We want to know which will produce more work

5 0
2 years ago
PHYSICS PLEASE HELP!
Salsk061 [2.6K]

Answer:

It would take two half-lives which would be 130days

The substance has a half-life of 30 minutes. There has been two cycles that have occurred.

idk the last one

Explanation:

3 0
3 years ago
The wind pushes a paper cub along the sand at a beach. The cup has a mass of 25 grams (= ? Kg's) and accelerates at a rate of 5
bixtya [17]

Force = (mass) x (acceleration)

= (0.025 kg) x (5 m/s²)

=   0.125 Newton
7 0
3 years ago
Two students, Jenny and Cho, are investigating motion.
IgorLugansk [536]

Answer:

1: a measuring instruments the students should use for time is a stopwatch

2: a measuring instruments the students should use for distance is a measuring tape

Explanation:

pls mark brainliest

8 0
1 year ago
6000 kg train moving 5 m/sec to east collides with 5000 kg train moving 3 m/sec to west. What is their velocity
Svetlanka [38]

The final velocity is 1.37 m/s east

Explanation:

We can solve this problem by using the law of conservation of momentum: in fact, in absence of external forces, the total momentum of the two trains must be conserved before and after the collision.

So we can write:

p_i = p_f\\m_1 u_1 + m_2 u_2 = (m_1+m_2)v

where:

m_1 = 6000 kg is the mass of the first train

u_1 = 5 m/s is the initial velocity of the first train (we take east as positive direction)

m_2 = 5000 kg is the mass of the second train

u_2 = -3 m/s is the initial velocity of the second train

v is the final combined velocity of the two trains

Re-arranging the equation and substituting the values, we find:

v=\frac{m_1 u_1 + m_2 u_2}{m_1+m_2}=\frac{(6000)(5)+(5000)(-3)}{6000+5000}=1.37 m/s

And the positive sign indicates their final direction is east.

Learn more about momentum here:

brainly.com/question/7973509

brainly.com/question/6573742

brainly.com/question/2370982

brainly.com/question/9484203

#LearnwithBrainly

8 0
3 years ago
Other questions:
  • Can anyone help me for this question please?? I really need help someone!!!
    15·1 answer
  • What are five things that cars use to live or help them function
    7·2 answers
  • What is the temperature at which the liquid reach the top of the straw or highest temperature you were able to get without the b
    15·1 answer
  • Raindrops are falling straight down at 11 m/s when suddenly the wind starts blowing horizontally at a brisk 5.0 m/s. From your p
    6·1 answer
  • The intensity of sunlight incident on the surface of a solar panel on your roof is 1000 W/m^2. Calculate the sunlight energy abs
    11·1 answer
  • What affect, if any, does increasing the speed of the plunger have on the wavelength of the waves
    12·1 answer
  • 5. The entrance of a science museum features a funnel into which marbles are rolled one at a time. The marbles circle around the
    12·1 answer
  • Carlota does 2000 J of work on a machine. The machine does 500 J of work. What is the efficiency of the
    7·2 answers
  • Freddy drives 4 miles east to his friends house. He then travels 9 more miles east to the supermarket. Finally on his way back h
    6·1 answer
  • rolls of foil are 304 mm wide and 0.020 mm thick. (the density of foil is 2.7 g/cm3 .) what maximum length of foil can be made f
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!