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
Svet_ta [14]
3 years ago
14

What is the average velocity of a car that travels 450 km north in 9.0 hours?

Physics
1 answer:
Hatshy [7]3 years ago
3 0

The average velocity of a car that travels 450 km north in 9.0 h is 5.0 x 10 km/h

You might be interested in
Use the drop-down menus to complete the sentences.
Grace [21]

Answer:

1) thinner, diverge

2) thicker, converge

Explanation:

i got it right

5 0
2 years ago
Read 2 more answers
A charge is moving in a magnetic field that points to the left. What direction can the charge move and experience no magnetic fo
tiny-mole [99]
The answer is left and right. 
4 0
3 years ago
Read 2 more answers
Protons are made up of ___ up quark(s) and ___ down quark(s).
SashulF [63]
Choice c it's confusing to understand but it's c
5 0
3 years ago
Read 2 more answers
A brave child decides to grab onto an already spinning merry‑go‑round. The child is initially at rest and has a mass of 34.5 kg.
rodikova [14]

Answer:

the moment of inertia of the merry go round is 38.04 kg.m²

Explanation:

We are given;

Initial angular velocity; ω_1 = 37 rpm

Final angular velocity; ω_2 = 19 rpm

mass of child; m = 15.5 kg

distance from the centre; r = 1.55 m

Now, let the moment of inertia of the merry go round be I.

Using the principle of conservation of angular momentum, we have;

I_1 = I_2

Thus,

Iω_1 = I'ω_2

where I' is the moment of inertia of the merry go round and child which is given as I' = mr²

Thus,

I x 37 = ( I + mr²)19

37I = ( I + (15.5 x 1.55²))19

37I = 19I + 684.7125

37I - 19 I = 684.7125

18I = 684.7125

I = 684.7125/18

I = 38.04 kg.m²

Thus, the moment of inertia of the merry go round is 38.04 kg.m²

7 0
3 years ago
Read 2 more answers
A 1,500 kg car hits a boulder with a force of 500 N, and the collision takes 0.5
Anuta_ua [19.1K]

Answer: C.

250 kg-m/s

Explanation:

Given that the

Mass M = 1,500 kg

Force F = 500 N

Time t = 0.5 seconds

From Newton's second law of motion which state that the rate of change of momentum is proportional to the applied force.

F = mV/t

Ft = mV

Where ft = impulse: the product of time and applied force

Substitutes force and time into the formula

Ft = 500 × 0.5 = 250 Ns

7 0
3 years ago
Other questions:
  • If a freely falling rock were equipped with a speedometer, by how much would itd speed readings increase with each second if it
    6·1 answer
  • What is the spring constant for a supermarket scale that stretches 0.01 m when a force of 4 N is applied
    9·2 answers
  • a 645 N person is wearing stiletto shoes. If she lifts her left leg, and rocks back onto the heel under her right leg, the press
    14·1 answer
  • A physicist's right eye is presbyopic (i.e., farsighted). This eye can see clearly only beyond a distance of 97 cm, which makes
    10·1 answer
  • Two manned satellites approaching one another at a relative speed of 0.550 m/s intend to dock. The first has a mass of 2.50 ✕ 10
    9·1 answer
  • Which statement best explains the difference between velocity and speed?
    13·2 answers
  • 9. A pendulum bob is made with a ball filled with water. What would happen to the frequency of vibration of this pendulum if a h
    9·1 answer
  • An oil tank has a base of area 2.5 m2 and is filled with oil to a depth of 1.2 m. The density of the
    15·1 answer
  • 3.- Un barco que tiene el motor averiado es ayudado por dos remolcadores para entrar en el puerto. Cada uno de ellos tira de él
    11·1 answer
  • A 100 kg cart on a roller coaster has 1800J of kinetic energy. How fast is it going?<br> KE= 1/2mv2
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!