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
hammer [34]
3 years ago
13

A force acts on a body of mass 13 kg initially at rest. The force

Physics
1 answer:
PtichkaEL [24]3 years ago
4 0

Answer:

Force that acted on the body was F = 13 N

Explanation:

If once accelerated, the body covers 60 meters in 6 seconds, then its velocity is 60/6 m/s = 10 m/s

When the force was acting (for 10 seconds) the object accelerated from rest (initial velocity vi = 0) to 10 m/s (its final velocity). therefore we can use the kinematic equation for the velocity in an accelerated motion given by:

v_f=v_i+a*t

which in our case becomes;

10\,m/s=0+a*(10\,s)

and we can solve for the acceleration as:

a = 10/10  m/s^2 = 1 m/s^2

Therefore the force acting on the body, based on Newton's 2nd Law expression: F = m * a is:

F = 13 kg * 1 m/s^2 = 13 N

You might be interested in
Which data set has the smallest standard deviation?
777dan777 [17]
The answer would be B.
<span>
Standard deviation basically measures how spread out the values are. Without solving, you can easily tell which one among your choices have a smaller deviation. The closer the values are to each other the smaller the standard deviation. The values of choice B are the closest together, so you can assume that they have the smallest standard deviation. </span>
8 0
3 years ago
Read 2 more answers
A hockey puck is sliding across a frozen pond with an initial speed of 9.3 m/s. It comes to rest after sliding a distance of 42.
kondaur [170]

Answer:

The coefficient of kinetic friction between the puck and the ice is 0.11

Explanation:

Given;

initial speed, u = 9.3 m/s

sliding distance, S = 42 m

From equation of motion we determine the acceleration;

v² = u² + 2as

0 = (9.3)² + (2x42)a

- 84a = 86.49

a = -86.49/84

|a| = 1.0296

F_k = \mu_k N = ma

where;

Fk is the frictional force

μk is the coefficient of kinetic friction

N is the normal reaction = mg

μkmg = ma

μkg = a

μk = a/g

where;

g is the gravitational constant = 9.8 m/s²

μk = a/g

μk = 1.0296/9.8

μk = 0.11

Therefore, the coefficient of kinetic friction between the puck and the ice is 0.11

3 0
3 years ago
Light from a fluorescent lamp is observed through a cloud of cool nitrogen gas. Again, two students are having a discussion abou
Vadim26 [7]

Answer:

From the previous explanation Student No. 1 has the correct explanation

Explanation:

When the fluorescent lamp emits a light it has the shape of its emission spectrum, this light collides with the atoms of Nitrogen and excites it, so these wavelengths disappear, lacking in the spectrum seen by the observed, for which we would see an absorption spectrum

The nitrogen that was exited after a short time is given away in its emission lines, in general there are many lines, so the excitation energy is divided between the different emission lines, which must be weak

From the previous explanation Student No. 1 has the correct explanation

8 0
3 years ago
If the primary source of atmospheric thermal energy on Earth is energy from the Sun, what conclusion can be made from the diagra
Tamiku [17]

Answer:B

Explanation:

Because the Earth's core isn't moving around earth therefore the center of Earth will forever be warm

4 0
3 years ago
What is the technical name for super glue type adhesives
Murrr4er [49]
The technical name for super glue type adhesive is Cyanoacrylate glue
5 0
3 years ago
Read 2 more answers
Other questions:
  • Suppose that an electric charge is produced on one part of a body. If the charge spreads through the entire body, the body is mo
    10·2 answers
  • Our family car travels 40 miles in 2 hours. What is our average speed in mph?
    7·1 answer
  • The position of a ball as a function of time is given by
    9·1 answer
  • Help Please
    12·1 answer
  • A car travels from Boston to Hartford in 4 hours. The two cities are 240 kilometers apart. What was the average speed of the car
    8·1 answer
  • In the Milky Way Galaxy, where would you expect to find the bulge?
    14·1 answer
  • A gas bottle contains 0.250 mol of gas at 730 mm hg pressure. if the final pressure is 1.15 atm, how many moles of gas were adde
    15·1 answer
  • Removing resistant transfer wires from a complete circuit will
    8·2 answers
  • How long did it take the shuttle shock to fall 12 meters
    5·1 answer
  • A bumper car with a mass of 86 kg is traveling at 3.6
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!