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
Amanda [17]
3 years ago
7

A 12 N force is used to pull a wagon 10 m to the left in 15 seconds. Which of the following represents the magnitude of the forc

e?
12 N
10 m
left
15 seconds



Jody drives 120 miles south from Kingston, NY to Princeton, NJ. If she drives 60 mph, how long will it take her to make the trip?
1 hour
2 hours
4 hours
cannot be determined



Jeremiah is riding his bicycle to the east. It takes him 10 seconds to change his velocity from 10 m/s to 15 m/s. What is Jeremiah's acceleration?
5 m/s
5 m/s/s
0.5 m/s
0.5 m/s/s
Physics
2 answers:
Lana71 [14]3 years ago
7 0

1. - 12N

2.- 2 hours

3. - 0.5 m/s/s

Nadya [2.5K]3 years ago
4 0

Answer:

12 Newtons

Explanation:

You might be interested in
Speed<br><br> Is speed a vector? Why or why not?
Murrr4er [49]

No, speed is not a vector. it is scalar.

because it doesn't need direction but need magnitude.

8 0
2 years ago
Read 2 more answers
Suppose a certain car supplies a constant deceleration of A meter per second per second. If it is traveling at 90km/hr. When. th
aksik [14]

Answer:

i)-6.25m/s

ii)18 metres

iii)26.5 m/s or 95.4 km/hr

Explanation:

Firstly convert 90km/hr to m/s

90 × 1000/3600 = 25m/s

(i) Apply v^2 = u^2 + 2As...where v(0m/s) is the final speed and u(25m/s) is initial speed and also s is the distance moved through(50 metres)

0 = (25)^2 + 2A(50)

0 = 625 + 100A....then moved the other value to one

-625 = 100A

Hence A = -6.25m/s^2(where the negative just tells us that its deceleration)

(ii) Firstly convert 54km/hr to m/s

In which this is 54 × 1000/3600 = 15m/s

then apply the same formula as that in (i)

0 = (15)^2 + 2(-6.25)s

-225 = -12.5s

Hence the stopping distance = 18metres

(iii) Apply the same formula and always remember that the deceleration values is the same throughout this question

0 = u^2 + 2(-6.25)(56)

u^2 = 700

Hence the speed that the car was travelling at is the,square root of 700 = 26.5m/s

In km/hr....26.5 × 3600/1000 = 95.4 km/hr

3 0
3 years ago
A 12.0-cm long cylindrical rod has a uniform cross-sectional area A = 5.00 cm2. However, its density increases linearly from 2.6
andriy [413]

Answer:

(a) The constants required describing the rod's density are B=2.6 and C=1.325.

(b) The mass of the road can be found using A\int_0^{12}\left(B+Cx)dx

Explanation:

(a) Since the density variation is linear and the coordinate x begins at the low-density end of the rod, we have a density given by

2.6\frac{g}{cm^3}+\frac{18.5\frac{g}{cm^3}-2.6\frac{g}{cm^3}}{12 cm}x = 2.6\frac{g}{cm^3}+1.325x\frac{g}{cm^2}

recalling that the coordinate x is measured in centimeters.

(b) The mass of the rod can be found by having into account the density, which is x-dependent, and the volume differential for the rod:

m=\int\rho dv=\int\left(B+Cx\right)Adx=5\int_0^{12}\left(2.6+1.325x\right)dx=126.6,

hence, the mass of the rod is 126.6 g.

7 0
3 years ago
Consider a train car being pulled along a track by the engine. What are four forces acting on the train car?
Sergeu [11.5K]
Kinetic and potential are 2
8 0
2 years ago
Read 2 more answers
A hairdryer is plugged into a 110-volt outlet. The hairdryer draws 4 amps of current. How much power (in watts) does the hairdry
soldi70 [24.7K]
I hope this will help u

8 0
3 years ago
Other questions:
  • Which of the following best describes what occurs in a fusion reaction?
    5·1 answer
  • Which derived quantity might be measured in mm^3
    7·1 answer
  • What is the name and degree of the line of longitude that passes through greenwich england
    13·2 answers
  • Why are there so few working wave power stations?
    15·2 answers
  • The formula used to find force is F=m*v.<br> true or false
    15·1 answer
  • How does sound travel through<br> different mediums?
    9·1 answer
  • An impala is an African antelope capable of a remarkable vertical leap. In one recorded leap, a 45 kg impala went into a deep cr
    5·1 answer
  • Why do white gassy stuff come out of planes?
    11·1 answer
  • What are electromagnetic waves?​
    9·2 answers
  • A small charge q is placed near a large spherical charge Q. The force experienced by both charges is F. The electric eld created
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!