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
SVETLANKA909090 [29]
3 years ago
13

Arace car accelerates uniformly at 11.3 m/s2. If the race car starts from rest how fast will it

Physics
1 answer:
Ganezh [65]3 years ago
7 0

Answer:

75.71 m/s

Explanation:

From equation of motion, acceleration is given by

a=\frac {v-u}{t}where v is the final velocity, u is the initial velocity and t is time taken.

Making v the subject of the above formula

v=at+u

Substituting 6.7 s for time, t and 11.3 for a and taking u as zero since it starts from rest

v=11.3*6.7=75.71 m/s

You might be interested in
Which of the following actions will increase the current induced in a wire by a<br> magnetic field?
In-s [12.5K]

Answer:

The induced current can be increased in the coil in the following ways: By increasing the strength of the magnet. By increasing the speed of the magnet through the coil.

Explanation:

8 0
2 years ago
A string under a tension of 50.4 N is used to whirl a rock in a horizontal circle of radius 2.51 m at a speed of 21.1 m/s. The s
Leokris [45]

Answer:

619.8 N

Explanation:

The tension in the string provides the centripetal force that keeps the rock in circular motion, so we can write:

T=m\frac{v^2}{r}

where

T is the tension

m is the mass of the rock

v is the speed

r is the radius of the circular path

At the beginning,

T = 50.4 N

v = 21.1 m/s

r = 2.51 m

So we can use the equation to find the mass of the rock:

m=\frac{Tr}{v^2}=\frac{(50.4)(2.51)}{21.1^2}=0.284 kg

Later, the radius of the string is decreased to

r' = 1.22 m

While the speed is increased to

v' = 51.6 m/s

Substituting these new data into the equation, we find the tension at which the string breaks:

T'=m\frac{v'^2}{r'}=(0.284)\frac{(51.6)^2}{1.22}=619.8 N

5 0
3 years ago
An airplane cabin is pressurized to 570 mmhg. what is the pressure inside the cabin in atmospheres?
abruzzese [7]
1 atm corresponds to 760 mmHg, so we can set up a simple proportion to find how many atmospheres correspond to 570 mmHg:
1 atm: 760 mmHg = x: 570 mmHg
and from this, we find
x= \frac{1 atm \cdot 570 mmHg}{760 mmHg} =0.75 atm
8 0
3 years ago
Read 2 more answers
Plz help difference between closed system and open system?
frozen [14]

A closed system is a system that is completely isolated from its environment. The physical universe, as we currently understand it, appears to be a closed system. An open system is a system that has flows of information, energy, and/or matter between the system and its environment, and which adapts to the exchange.

D makes the most sense, but you just have to put two and two together and go with your gut feeling, first cross out the answers that don't make sense (A didnt make sense) and go from there! I hope the little bit above me helped you answer or decide :) Good luck!

4 0
3 years ago
Help! Will Mark Brainliest!
boyakko [2]

Answer:

D 5m/s

Explanation:

6 0
3 years ago
Other questions:
  • N2 + O2 → 2NO N-N triple bond: 941 kJ/mol O-O double bond: 495 kJ/mol N-O bond: 201 kJ/mol
    7·1 answer
  • If two stars differ by 9.6 magnitudes what is their flux ratio?
    12·1 answer
  • What is the unbalanced force on a car moving with a constant velocity of 25 m/s?
    10·1 answer
  • Air at 25°C and 5 atm is throttled by a valve to 1 atm. If the valve is adiabatic and the change in kinetic energy is negligible
    13·1 answer
  • * An 10 kg box is sitting on a fairly smooth surface. Friction is still present. The coefficient of static friction
    7·1 answer
  • The refractive index of glass is 1.52
    13·1 answer
  • I love you thanks for help❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️solveeeeee❤️❤️❤️❤️❤️❤️plzzzzz
    9·2 answers
  • Planet X has a moon similar to Earth’s moon.<br><br> Which path would this moon’s orbit take?
    12·1 answer
  • 1. A roller coaster with a mass of 800 kg sits stationary at the top of a section of track, 75 m above
    10·1 answer
  • The displacement x with respect to time t of a particle moving in simple harmonic motion is given by x = 5cos(16pi*t). where x i
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!