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
frozen [14]
3 years ago
14

If a cart goes around a turn at 20 km/h ,what remains constant

Physics
1 answer:
Vitek1552 [10]3 years ago
7 0

Answer: 4.speed

Explanation:

In this case, we know that the cart remains at a constant 20km/h.

Now, one could say that "the velocity remains constant, because it always is 20km/h"

But remember that velocity is a vector, so this has a direction, and if the cart is going around a turn, then the direction of motion is changing, which tell us that there is acceleration.

But the module of the velocity, the speed, remains constant at 20km/h.

Then the correct option is 4, speed.

You might be interested in
Write down any 5 example of conservation of momentum?​
Verdich [7]

Answer:

1) Motion of air mass moving from equator northward (closer to earth axis)

2) Motion of object in orbit

3) Collision of 2 objects

4) Skater changing rotation by extension of arms

5) Motion of rocket due to velocity of expelled gas

6 0
3 years ago
PHYSICAL SCIENCE HELP PLEASE !!!!! Picture below is for question 4
Eva8 [605]

Question 1) excited and moving around a lot.

Question 2) heat

Question 3) specific heat

Question 4) As temperature increases, energy transferred increases.

Hope these answers help!

3 0
4 years ago
A projectile is fired with an initial velocity of 450 feet per second at an angle of 70° with the horizontal.
pav-90 [236]
<h2>After 26.28 seconds projectile returns 26.28 seconds.</h2>

Explanation:

Initial velocity = 450 ft/s = 137.16 m/s

Angle, θ = 70°

Consider the vertical motion of projectile,

When the projectile return to the ground we have

           Displacement, s = 0 m

           Acceleration, a = -9.81 m/s²

            Initial velocity, u = 137.16 x sin70 = 128.89 m/s

Substituting in s = ut + 0.5 at²

                s = ut + 0.5 at²

                0 = 128.89 x t + 0.5 x (-9.81) x t²

                t² - 26.28 t = 0

                t ( t- 26.28) = 0

               t = 0 s or t = 26.28 s

After 26.28 seconds projectile returns 26.28 seconds.

5 0
3 years ago
A piece of transparent meterial which has one or two spherical surfaces is called​
Iteru [2.4K]

Answer:

Lens

Explanation:

Lenses fit this description.

4 0
3 years ago
Which is greater, the force exerted by the Earth on the Sun, or the force exerted by the Sun on the Earth? Why?
LekaFEV [45]

Answer:

There is no great force, the force exerted by the Earth on the Sun, and the force exerted by the Sun on the Earth are equal

Explanation:

By definition...

3 0
3 years ago
Other questions:
  • Can spoon ring like a bell prove it
    7·1 answer
  • this Punnett square shows the cross between two pants. One parent has round seeds (RR). And the other parent has wrinkled seeds
    10·1 answer
  • A car races around a circular track. Friction on the tires is the what that acts toward the center of the circle and keeps the c
    6·1 answer
  • Using r.i.v.p. How do I calculate circuits wit 12 volts
    14·1 answer
  • 1. is the full moon a spring tide or neap tide
    6·2 answers
  • What causes interstellar dust and clouds into plants and stars
    8·1 answer
  • What value relates the speed of light in a vacuum to the speed of light in a given material? A) angle of incidence B) angle of r
    5·1 answer
  • If an object is NOT accelerating, then one knows for sure that it is ___.
    5·1 answer
  • Which is the BEST explanation for why the speed of sound changes for solids, liquids, and gases?
    14·1 answer
  • A 60 kg gorilla named Anthony Falcon is standing on his skateboard. This is on planet Erf,
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!