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
adelina 88 [10]
3 years ago
8

What is a car's acceleration if it increases its speed from 5 m/s to 20 m/s in 3 s?

Physics
2 answers:
liberstina [14]3 years ago
8 0

the correct answer would be C. 5m/s^2


20-5 = 15

15/3 = 5

nata0808 [166]3 years ago
6 0

Answer : The acceleration of the car is, 5m/s^2

Explanation :

By the 1st equation of motion,

v=u+at ...........(1)

where,

v = final velocity = 20 m/s

u = initial velocity  = 5 m/s

t = time = 3 s

a = acceleration of the car = ?

Now put all the given values in the above equation 1, we get:

20m/s=5m/s+a\times (3s)

a=5m/s^2

Therefore, the acceleration of the car is, 5m/s^2

You might be interested in
In Rutherford's experiment, which of the following proved that the
vampirchik [111]

Answer:

b) the alpha particles were found to be attracted to the nucleus

Explanation:

5 0
3 years ago
Scalars are used to solve projectile motion problems because they allow the analysis of one direction at a time for two-dimensio
Korolek [52]
The statement is false. Vectors are used to solve projectile motion problems because they allow the analysis of one direction at a time for two-dimensional motion. Scalar quantities can be used to analyze linear motion problem, but not projectile motion.
4 0
3 years ago
What are some of the characteristics scientists are looking for when they search for other Earth-like planets?
Yanka [14]
The ability to sustain life
(ie water, shelter, food, basic needs)
Hope this helped!
:-)
4 0
3 years ago
A man walking on a tightrope carries a long a pole which has heavy items attached to the two ends. If he were to walk the tight-
katen-ka-za [31]

Answer:

 I_weight = M L²

this value is much larger and with it it is easier to restore balance.I

Explanation:

When man walks a tightrope, he carries a linear velocity, this velocity is related to the angular velocity by

            v = w r

For man to maintain equilibrium needs the total moment to be zero

             ∑τ = I α

              S  τ = 0

The forces on the home are the weight of the masses, the weight of the man and the support on the rope, the latter two are zero taque the distance to the center of rotation is zero.

Therefore the moment of the masses and the open is the one that must be zero.

If the man carries only the bar, we could approximate it by two open one on each side of the axis of rotation formed by the free of the rope

              I = ⅓ m L² / 4

As the length of half the length of the bar and the mass of the bar is small, this moment is small, therefore at the moment if there is some imbalance it is difficult to recover.

If, in addition to the opening, each of them carries a specific weight, the moment of inertia of this weight is

             I_weight = M L²

this value is much larger and with it it is easier to restore balance.

5 0
3 years ago
Plate tectonics is the scientific theory explaining the movement of the earths crust. The movement of these tectonic plates is l
zzz [600]

Answer:

Continental drift theory describes the long term effect of plate tectonics.

Explanation:

The long term result of plate tectonic movement is the continental drift. The continents of Earth lay on tectonic plates, that are in motion and interaction via plate tectonics. The drift of the Earths continent is an ongoing process evident in the rift valleys and seafloor spreading zones.

The theory that  the Earth's continents are dynamic and have drifted relative to each other is known as continental drift which correlates with the theory of plate tectonics.

Every year, the Earth's outer shell plates are displaced by a small amount due to the heat coming from the Earths interior via convection currents.

7 0
4 years ago
Other questions:
  • Suppose a disk with constant angular velocity has rotational kinetic energy 1280 J. If the moment of inertia of the disk is 35 k
    15·1 answer
  • What happens to the pwc when the throttle is released?
    15·1 answer
  • Which of the following is a method used to prevent soil erosion?
    6·1 answer
  • Identify conditions that can contribute to an increase in wind erosion.
    9·2 answers
  • A photoelectric effect experiment finds a stopping potential of 1.93 V when light of wavelength 200 nm is used to illuminate the
    7·1 answer
  • Explain how valence electrons can result in the<br> creation of ions.
    15·1 answer
  • A 4.88 x 10-6 C charge moves 265 m/s
    7·2 answers
  • A microwave oven has 1200 W. If it receives 120 V of potential difference, what is the current in the microwave?
    11·1 answer
  • Pleaseeeee help!! It’s due very soon
    15·1 answer
  • Does the mass of a parachute affect terminal velocity?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!