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
konstantin123 [22]
3 years ago
12

A driver moves with initial velocity of 40m/s accelerates uniformly at a rate of 12m/s2.  It attains a velocity 52m/s. calculate

the distance covered during the journey.
​
Physics
1 answer:
r-ruslan [8.4K]3 years ago
5 0

Answer:

The total distance covered is 46m

Explanation:

From the question, we have the following given parameters.

Initial Velocity = 40m/s

Acceleration = 12m/s²

Final Velocity = 52m/s

Required

Calculate the distance covered during the journey

The question can be solved using the following equation of motion.

v² = u² + 2as

Where

v = final velocity = 52m/s

u = initial velocity = 40m/s

a = acceleration = 12m/s²

s = distance = ?

By substituting the above values in the stated formula

v² = u² + 2as becomes

52² = 40² + 2 * 12 * s

2704 = 1600 + 24s

Subtract 1600 from both sides

2704 - 1600 = 1600 - 1600 + 24s

1104 = 24s

Divide both sides by 24

1104/24 = 24s/24

46 = s

Reorder

s = 46

Hence, the total distance covered is 46m

You might be interested in
A student throws a ball upward with a velocity of 35 m/s. What is the acceleration of the ball as it rises to the top of its arc
lora16 [44]

Answer:

The acceleration of the ball as it rises to the top of its arc equals 9.807 meters per square second.

Explanation:

Let suppose that maximum height of the arc is so small in comparison with the radius of the Earth.

Since the ball is launched upwards, then the ball experiments a free-fall motion, that is, an uniform accelerated motion in which the element is accelerated by gravity. Then, the acceleration experimented by the motion remains constant at every instant and position.

Besides, the gravitational acceleration in the Earth and, in consequence, the acceleration of the ball as it rises to the top of its arc equals 9.807 meters per square second.

7 0
3 years ago
How much kinetic energy does a 4kg cat have while running at 9 m/s
ludmilkaskok [199]

Answer:

How much kinetic energy does a 4 Kg cat have while running at 9 m/s?

its 5 J of kinetic energy.

Explanation:

3 0
2 years ago
Read 2 more answers
An object moving due to gravity can be described by the motion equation y=y0+v0t−12gt2, where t is time, y is the height at tha
Lynna [10]

Answer: 6.45 s

Explanation:

We have the following equation:

y=y_{o}+V_{o}t-\frac{1}{2}gt^{2} (1)

Where:

y=0 is the height when the rock hits the ground

y_{o}=75 m the height at the edge of the cilff

V_{o}=20 m/s the initial velocity

g=9.8 m/s^{2} acceleration due gravity

t time

0=75 m+(20 m/s)t-(4.9 m/s^{2})t^{2}  (2)

Rearranging the equation:

-(4.9 m/s^{2})t^{2} + (20 m/s)t + 75 m=0 (3)

At this point we have a quadratic equation of the form at^{2}+bt+c=0, and we have to use the quadratic formula if we want to find  t:

t=\frac{-b\pm\sqrt{b^{2}-4ac}}{2a}  (4)

Where a=-4.9, b=20, c=75

Substituting the known values and choosing the positive result of the equation:

t=\frac{-20\pm\sqrt{20^{2}-4(-4.9)(75)}}{2(-4.9)}  (5)

t=6.453 s  This is the time it takes to the rock to hit the ground

8 0
3 years ago
It takes 1 molecule of nitrogen and 3 molecules of hydrogen to produce 2 molecules of ammonia using the following formula:
fgiga [73]

Here, we are required to determine which combination of molecules will produce ammonia with no leftovers.

Option A: 2N2 and 6H2 is the correct combination of molecules that will produce ammonia with no leftovers.

First, it is important to know that both Nitrogen and Hydrogen used in the production of ammonia are diatomic.

Secondly, Nitrogen and Hydrogen are in the ratio 1 : 3.....

As such, the coefficient of hydrogen should be thrice that of Nitrogen to ensure that there are no leftovers.

Therefore, option A which has:

2N2 and 6H2 is the correct combination of molecules that will produce ammonia with no leftovers.

Read more:

brainly.com/question/24396848

8 0
3 years ago
When Jesus healed the paralyzed man what did he demonstrate he had power over
Otrada [13]
The nervous symstem and the whole human body
7 0
3 years ago
Read 2 more answers
Other questions:
  • Why is physics important to everyone? Describe 5 applications of physics in everyday life.
    15·1 answer
  • A horse gallops along a racecourse at a speed of 40km/h. It takes the horse 3 minutes to run the length of the track. Convert 3
    7·1 answer
  • Consider two thin, coaxial, coplanar, uniformly charged rings with radii a and b푏 (a
    9·1 answer
  • What drug is jon abusing
    6·2 answers
  • Which part of the sun lies directy above the visible surface of the sun
    7·1 answer
  • Write down the relation between energy and power​
    13·2 answers
  • An object of mass m is placed on Spring A, which is compressed by distance x. The spring is released and the velocity of the pus
    9·1 answer
  • How r u?<br> Are u good?
    12·2 answers
  • Hypothesis what is it
    8·1 answer
  • NaCl solid is an example of a/an<br> A. Insulator<br> B. Conductor<br> OC. Nonmetal<br> D. Metalloid
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!