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
avanturin [10]
3 years ago
11

A motorist driving at 25 meters/second decelerates to

Physics
2 answers:
Ilia_Sergeevich [38]3 years ago
8 0
Work done = 0.5*m*[(v2)^2 - (v1)^2]
where m is mass,
v2 and v1 are the velocities.

Given that m = 1.50 x 10^3 kg, v2 = -15 m/s (decelerates), v1 = 25 kg,

Work done = 0.5 * 1.50 x 10^3 * ((-15)^2 - 25^2) = 3 x 10^5 joules

Just ignore the negative value for the final result because work is a scalar quantity.
andrew11 [14]3 years ago
3 0

Answer:

C.

3.0 × 10^5 joules

You might be interested in
A vector is 14.4 m long and
MaRussiya [10]

Answer:

Explanation:

The x-component is found in the magnitude of the vector times the cosine of the angle.

A_x=14.4cos133 and, to 3 sig dig,

A_x=-9.82m

3 0
3 years ago
The diagram below shows a food web.
Mekhanik [1.2K]
i think it’s B. sorry if i’m wrong
8 0
2 years ago
Read 2 more answers
How are the land area and the oceans affected during an ice age
amm1812
The land was frozen everywhere and a part of the ocean froze over to create a bridge between two countries. Some people may disagree with me over the ice bridge, though.
3 0
3 years ago
Read 2 more answers
Which SI units are combined to describe a force
Keith_Richards [23]

Answer:

C.

Explanation:

kilograms and m/s^2

4 0
2 years ago
Four point masses of 3.0 kg each are arranged in a square on masslessrods. The length of a side of the square is 0.50m. What is
Zigmanuir [339]

Answer:

Part a)

I = 1.5 kg m^2

Part b)

I = 0.75 kg m^2

Part c)

I = 1.5 kg m^2

Explanation:

Part a)

Moment of inertia of the system about an axis passing through B and C is given as

I = mL^2 + mL^2 + m(0) + m(0)

I = 2mL^2

I = 2(3 kg)(0.50^2)

I = 1.5 kg m^2

Part b)

Moment of inertia of the system about an axis passing through A and C is given as

I = m(0^2) + m(\frac{L}{\sqrt2})^2 + m(0) + m(\frac{L}{\sqrt2})^2

I = 2m\frac{L^2}{2}

I = (3 kg)(0.50^2)

I = 0.75 kg m^2

Part c)

Moment of inertia of the system about an axis passing through the center of the square and perpendicular to the plane of the square

I = m(\frac{L}{\sqrt2})^2 + m(\frac{L}{\sqrt2})^2 + m(\frac{L}{\sqrt2})^2 + m(\frac{L}{\sqrt2})^2

I = 4m\frac{L^2}{2}

I = 2(3 kg)(0.50^2)

I = 1.5 kg m^2

8 0
3 years ago
Other questions:
  • The temperature of 4.29 mol of an ideal diatomic gas is increased by 27.1 ˚C without the pressure of the gas changing. The molec
    5·1 answer
  • Which element is stable and nonreactive?
    10·1 answer
  • Which of the following would be useful to show the growth rate of plants at varying temperatures?
    10·1 answer
  • The winning time for a 500.0 mile circular race track was 3 hours and
    12·1 answer
  • As temperature increases, ________. Group of answer choices the resistance of a conductor remains the same the resistance of a c
    12·1 answer
  • Thinking about the winter we missed out on this year. Calvin and his tiger go sledding down a snowy hill. There is friction betw
    9·1 answer
  • A helicopter is ascending vertically. a passenger accidentally drops her wallet out the sides of the helicopter when it is 160 m
    13·1 answer
  • Is xenon a pure substance​
    5·2 answers
  • A cross country skier moves 32 m north, then 65 m south, and finally 16 m north. What is the distance? What is the displacement
    6·1 answer
  • A football is kicked from ground level with an initial velocity of 20.2 m/s at angle of 43.0 above the horizontal. How long, in
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!