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
pshichka [43]
3 years ago
14

A 5.00 kilogram block slides along a horizontal,frictionless surface at 10.0 meters per second. for 4.00 seconds. The magnitude

of the blocks momentum is ?
a. 200 Kg m/s
b. 50.0 Kg m/s
c. 20.0 Kg m/s
d. 12.5 Kg m/s
Physics
1 answer:
finlep [7]3 years ago
5 0
In this question a lot of information's are provided. Among the information's provided one information and that is the time of 4 seconds is not required for calculating the answer. Only the other information's are required.
Mass of the block that is sliding = 5.00 kg
Distance for which the block slides = 10 meters/second
Then we already know that
Momentum = Mass * Distance travelled
                   = (5 * 10) Kg m/s
                   = 50 kg m/s
So the magnitude of the blocks momentum is 50 kg m/s. The correct option among all the given options is option "b".
You might be interested in
A student drops a rock from a bridge to the
qaws [65]

Answer:

let us use the expression v = ./2gS in both the cases.

a) In the first case g = 9.8 m/s^2 and S = 10.3 m.

So v = 14.21 m/s

b) in the second case, g = 1.64 m/s^2 and S = 4.2 m = 3.71 m/s

00

Explanation:

6 0
3 years ago
An automobile is traveling on a long, straight highway at a steady 76.0 mi/h when the driver sees a wreck 180 m ahead. at that i
masha68 [24]

a) The car’s speed just after leaving the icy portion of the road is the first part

We have s = ut +\frac{1}{2} at^2

Here s = 130 m, a = -1.2 m/s^2, u = 76 mile/hr = 33.975 m/s

             130 = 0*t - 0.5*(-1.2)*t^2\\ \\ \\ t=14.72 seconds

After 14.72 seconds cars speed is given by v =u +at

                                                          u = 33.975m/s, a = -1.2 m/s^2

                                                      v = 33.975-1.2*14.72 = 16.31 m/s

   So velocity of car on leaving icy surface = 16.31 m/s

b) Time taken after icy surface

              0 = 16.31 - 7.10*t

              t = 2.23 seconds

         Distance traveled during this time

                   v^2 = u^2+2as\\ \\ 0 = 16.31^2 - 2*7.10*s\\ \\ s = 18.74 m

   Total distance traveled = 130+18.74 = 148.74 m

c) Total time taken = 14.72+2.23=16.95 seconds

3 0
3 years ago
63 J of heat are added to a closed system. The initial energy of the system is 58J, and the final internal energy is 93J. How mu
Nesterboy [21]

ΔU = Q + W  

  • heat in, Q +  
  • heat out, Q -  
  • does work , W -  
  • work in, W +

93-58 = 63 + W

35 = 63 + W

W = - 28 J (does work/being done by system)

7 0
2 years ago
Newton's second law of motion is also known as the law of.......
OverLord2011 [107]
I think it is force of acceleration but I'm not sure.. hope this helps though!
4 0
3 years ago
If an ocean wave has a frequency of 2 waves/s and a speed of
LuckyWell [14K]

Answer:2m

Explanation:

Wavelength=velocity/frequency

Wavelength=4/2=2m

6 0
2 years ago
Other questions:
  • Electrons are important to electric current because they are able to__________.
    11·2 answers
  • At the maximum height of a projectile’s trajectory—
    10·2 answers
  • What particular problem is the topic of the essay and what is the author’s main contention about how the Constitution addresses
    12·1 answer
  • The laboratory is based on the assumption that at the two points of the motion being considered, the mass is at rest. What kind
    13·1 answer
  • What is the most likely elevation of point B?<br>a. 150 ft<br>b. 200 ft<br>c. 125 ft<br>d. 225 ft​
    5·2 answers
  • What does transverse wave mean
    9·2 answers
  • Which is an example of a non-contact force?
    8·1 answer
  • Advantages of writing very large and very small numbers in the terms of power of ten​
    12·2 answers
  • A soccer player runs 75m in a straight line down a soccer field in 11 seconds. What
    13·1 answer
  • Two identical charges are located 1 m apart and feel a 1 N repulsive electric force. What is the charge of each particle.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!