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
almond37 [142]
3 years ago
12

A truck is moving with a certain uniform velocity. It is accelerated uniformly by 0.75 m/s^2. After 20 seconds , the velocity be

comes 72km/h.Find the initial velocity
Physics
1 answer:
scoundrel [369]3 years ago
5 0

Answer:

Vi = 5 m/s

Explanation:

let (a) acceleration = 0.75 m/s²

(t) time = 20 seconds

Vf = final velocity = 72 km/hr  (convert to m/s to units consistency = 20 m/s)

find Initial velocity (Vi)

       Vf - Vi

a =  -----------

             t

Vi = Vf - (a * t)  = 20 - (0.75 * 20)

Vi = 5 m/s

You might be interested in
Which factor affects the angle of sunlight on Earth? The distance between Earth and the sun Earth's tilt from its axis The path
Rainbow [258]
Earth’s tilt from its axis.
For explanation:
The angle in which Earth is at is 23.5°. This causes its tilt which affects how the Sun’s light hits Earth

6 0
1 year ago
What is frost weddging
kiruha [24]
Freeze wedging<span> is caused by the repeated freeze-thaw. </span>Frost wedging<span> occurs as the result of 9 % expansion of water when it is converted to ice. Cracks filled with water are forced further apart when it freezes. cycle.</span>
4 0
3 years ago
Read 2 more answers
a snail takes 16 minutes 40 seconds to cover a distance of 1 m calculate the average speed of the swimmer​
matrenka [14]
The snail’s speed is 0.001042. Hope this helps!

8 0
2 years ago
Read 2 more answers
What equation would you use to calculate the ideal mechanical advantage of a wheel and axle? This is Science not Physics
Lyrx [107]
<span> you divide the radius of the </span>wheel<span> by the radius of the </span>axle<span>.</span>
3 0
3 years ago
A mover pushes a 46.0kg crate 10.3m across a rough floor without acceleration. How much work did the mover do (horizontally) pus
Alchen [17]

Answer:

<h3>2,321.62Joules</h3>

Explanation:

The formula for calculating workdone is expressed as;

Workdone = Force * Distance

Get the force

F = nR

n is the coefficient of friction = 0.5

R is the reaction = mg

R = 46 ( 9.8)

R = 450.8N

F = 0.5 * 450.8

F = 225.4N

Distance = 10.3m

Get the workdone

Workdone = 225.4 * 10.3

Workdone  = 2,321.62Joules

<em>Hence the amount of work done is 2,321.62Joules</em>

3 0
3 years ago
Other questions:
  • A 20 kg object is dropped from a very tall building. What is the weight of this objects? After 5 seconds, how has the object fal
    10·1 answer
  • A 15 kg mass is moving at 7.50 meters per second on a horizontal, frictionless surface. What is the total work that must be done
    12·1 answer
  • The magnetic bearing of compass "north" is _____. 090 180 270 360
    12·1 answer
  • A voltage amplifier with an input resistance of 40k ohms, an output resistance of 100 ohms, and a gain of 300 V/V is connected b
    6·1 answer
  • Identify the procedure to determine a formula for self-inductance, or inductance for short. Using the formula derived in the tex
    13·1 answer
  • An 8 Ω resistor is connected to a battery. The current that flows in the circuit is 2 A. Calculate the voltage of the battery.
    6·1 answer
  • Is length a <br> vector,<br> scalar<br> ,both,<br> neither
    15·1 answer
  • A high increase his speed from 3.2 m/ s to 5.6m/s during in interval. What is his acceleration that time
    9·1 answer
  • What is the velocity of a 1200 kg boat with a kinetic energy of 160,000 J​
    5·1 answer
  • When does the net flux of dissolved molecules stop
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!