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
Ksju [112]
3 years ago
13

A- what constant acceleration, in SI units, must a car have to gofrom zero to 60 mph in 10 s?

Physics
2 answers:
lorasvet [3.4K]3 years ago
4 0

Answer:

a) acceleration a = 2.68 m/s^2

b) fraction of g = 0.273 or 27.3%

c) distance travelled d = 134m (in SI unit)

d = 439.5ft (in feet)

Explanation:

a) converting 60mph (miles per hour) to m/s

∆v = 60 miles/hour × 1609.344meters/mile × 1/3600 seconds/hour

∆v = 26.82m/s

t = 10s

acceleration = change in velocity/time = ∆v/t

Acceleration a = 26.82/10 = 2.68m/s^2

b) acceleration due to gravity is g = 9.8m/s^2

Fraction of g = a/g = 2.68/9.8 = 0.273

Fraction = 0.273 or 27.3%

c) distance travelled can be calculated using the equation below.

d = ut + 0.5at^2 ....1

Initial speed u = 0

time t = 10s

Acceleration a = 2.68m/s^2

d = distance covered.

From equation 1, putting u = 0

d = 0.5at^2

d = 0.5(2.68 × 10^2)

d = 134m

Converting meters to feet

d = 134m × 3.28ft/m

d = 439.5ft

umka2103 [35]3 years ago
3 0

Answer:

(a) 0.017m/s^2

(b) 17/100,000

(c) 0.17m, 0.558ft

Explanation:

(a) speed = 60mph = 60m/1h × 1h/3600s = 0.017m/s, time = 10s

Acceleration (a) = speed ÷ time = 0.017m/s ÷ 10s = 0.0017m/s^2

(b) g = 9.8m/s^2, a = 0.0017m/s^2

a/g = 0.0017/9.8 = 0.00017 = 17/100,000

(c) Distance = speed × time = 0.017m/s × 10s = 0.17m

Distance in foot = 0.17 × 3.2808ft = 0.558ft

You might be interested in
Why is it important to use placebos and a double-blind approach in some studies
viktelen [127]
Another name for these two words is "constant" and you want to have a "constant", because you want something to compare your experimental group to, to see whether data had changed or not. So you have placebos or a double- blind to compare your experimental group to it and also so you know you don't have a bias or anything in the study.
6 0
2 years ago
In the following circuit, the supplied voltage is 1.5 volts and the resistor value is 2 ohms. Use Ohm's law to determine the cur
attashe74 [19]

Answer:

0.75 Amps

Explanation:

I had this question and this was right

7 0
3 years ago
Read 2 more answers
Which statement accurately describes nutritional dietary supplements?
vladimir2022 [97]

Answer:

its b

Explanation:

7 0
2 years ago
A machine part has the shape of a solid uniform sphere of mass 245 g and diameter 4.30 cm . It is spinning about a frictionless
Alla [95]

Answer:

Angular acceleration, \alpha =9.49\ rad/s^2

Explanation:

It is given that,

Mass of the solid sphere, m = 245 g = 0.245 kg

Diameter of the sphere, d = 4.3 cm = 0.043 m

Radius, r = 0.0215 m

Force acting at a point, F = 0.02 N

Let \alpha is its angular acceleration. The relation between the angular acceleration and the torque is given by :

\tau=I\times \alpha

I is the moment of inertia of the solid sphere

For a solid sphere, I=\dfrac{2}{5}mr^2

\alpha =\dfrac{\tau}{I}

\alpha =\dfrac{F.r}{(2/5)mr^2}

\alpha =\dfrac{5F}{2mr}

\alpha =\dfrac{5\times 0.02}{2\times 0.245\times 0.0215}

\alpha =9.49\ rad/s^2

So, its angular acceleration is 9.49\ rad/s^2. Hence, this is the required solution.

3 0
3 years ago
Which of these colors of light passes most easily through interstellar clouds? which of these colors of light passes most easily
Kruka [31]
Blue!! Gfcdgfcdvgcgccxdscxx
6 0
3 years ago
Other questions:
  • The force of repulsion between two like-charged particles will increase if
    12·2 answers
  • How does the mass of an object affect the outcome when an unbalanced force acts on it?
    11·1 answer
  • Earth's _____ cycle moves water from one reservoir to another. This cycling of materials is one of Earth's dynamic processes.
    5·2 answers
  • Find the potential energy of a 50gof mass 10kg standing on a building floor of 10m above the ground level​
    13·1 answer
  • True of false metals like copper are sometimes used to fill cavities in teeth
    9·1 answer
  • Do you guys know how to get a fat a**?
    10·2 answers
  • _____ are group of tissue working together to perform a certain job.
    9·1 answer
  • How often should muscle strengthening activities be performed?
    11·2 answers
  • a spring with a constant of 80N/m is stretched by a force of 240N. how much the displacement of the spring from equilibrium?
    6·1 answer
  • A brick of mass 5 kg is released from rest at a height of 3 m. How fast is it going when it hits the ground? Acceleration due to
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!