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
lapo4ka [179]
3 years ago
10

Two objects with the same mass move with the same speed but in opposite directions. Compare their kinetic energies.

Physics
2 answers:
ddd [48]3 years ago
5 0

Answer:

A.  Kinetic energies are equal.

Explanation:

The kinetic energy of the bodies will be equal since the mass and speed are the same.

Kinetic energy is the energy due to the motion of a body.

Mathematically;

           K.E  = \frac{1}{2} m v²

m is the mass

v is the speed

 The kinetic energy is a scalar quantity with no regard for direction.

snow_tiger [21]3 years ago
3 0

Answer:kinetic energies are equal

Explanation:

You might be interested in
An electric field of 8.20 ✕ 105 V/m is desired between two parallel plates, each of area 25.0 cm2 and separated by 2.45 mm. Ther
astraxan [27]

Answer:

q = 1.815 \times 10^{-8} C

Charge on one plate is positive in nature and on the other plate it is negative in nature.

Explanation:

E = 8.20 x 10^5 V/m, A = 25 cm^2, d = 22.45 mm

According to the Gauss's theorem in electrostatics

The electric field between the two plates

E = \frac{\sigma }{\varepsilon _{0}}

{\sigma }= E \times {\varepsilon _{0}}

{\sigma }= 8.20 \times 10^{5} \times {8.854 \times 10^{-12}

{\sigma }= 7.26 \times 10^{-6} C/m^{2}

Charge, q = surface charge density x area

q = 7.26 \times 10^{-6} \times 25 \times 10^{-4}

q = 1.815 \times 10^{-8} C

5 0
3 years ago
You’re driving your car towards an intersection. A Porsche is stopped at the red light. You’re traveling at 36 km/h (10 m/s). As
34kurt

Your position at time t, relative to the stop line:

x_1=-15\,\mathrm m+\left(10\dfrac{\rm m}{\rm s}\right)t

The Porsche's position:

x_2=\dfrac12\left(3\dfrac{\rm m}{\mathrm s^2}\right)t^2

a. You pass the Porsche immediately after the time it takes for x_1=x_2:

-15\,\mathrm m+\left(10\dfrac{\rm m}{\rm s}\right)t=\dfrac12\left(3\dfrac{\rm m}{\mathrm s^2}\right)t^2\implies t=2.3\,\rm s

at which point you both will have traveled 7.8 m from the stop line.

b. The equation in part (a) has two solutions. The Porsche passes you at the second solution of about t=4.4\,\rm s, at which point you both will have traveled 29 m.

c. At time t, the Porsche is moving at velocity

v=\left(3\dfrac{\rm m}{\mathrm s^2}\right)t

so that at the moment it passes you, its speed is 13 m/s, which is about 46.8 km/h and below the speed limit, so neither of you will be pulled over.

6 0
4 years ago
WHATS THE CORRECT ANSWER ANSWER ASAP
Harman [31]

Answer:

speed and velocity

Explanation:

8 0
2 years ago
Read 2 more answers
You push a shopping cart filled with groceries (total mass = 20 kg) by applying a force to the cart 30° from the horizontal. If
makkiz [27]

Answer:

3.72 m/s²

Explanation:

Horizontal component of the force applied = Fcosθ = 86 cos 30 = 74.478 N

Force = mass × acceleration = 74.478 N

ma = 74.478 N

a = 74.478 / 20 since friction can be neglected = 3.72 m/s²

4 0
4 years ago
Read 2 more answers
Which would cause the greatest increase in the acceleration of a satellite?
vagabundo [1.1K]
Its C. a decrease in the radius and an increase in the tangential speed ,I'm 100% sure
6 0
4 years ago
Read 2 more answers
Other questions:
  • Which of these answers best describes a fossil?
    7·2 answers
  • A wind is blowing a small ice fishing shed along the ice to the east with a 800N force. The shed weighs 2,200N. What would the l
    6·1 answer
  • Provide an example of a material that transmits, reflects, and absorbs light simultaneously?
    10·1 answer
  • Number 6 if you can please and thank you for your help
    8·1 answer
  • This system filters wastes from the blood
    8·2 answers
  • A 20 N force acts to the right on a 25kg mass that is resting on a flat, frictionless plane. What is the acceleration of the mas
    14·1 answer
  • 4. How does the type of medium affect a sound wave?
    10·1 answer
  • Describe what happens when electrical impulses cross muscle fibers
    12·1 answer
  • A 2.0 kg block is pulled across a horizontal surface by a 15 N force at a constant velocity.a. What is the net force acting on t
    13·1 answer
  • Orion *
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!