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
Andreas93 [3]
2 years ago
8

A 200 kg roller coaster car is located at the top of a hill where the height is 30 m. What is the velocity when it reaches the b

ottom of the hill? 5.5 m/s 11.2 m/s 16.7 m/s 24.2 m/s
Physics
1 answer:
Makovka662 [10]2 years ago
8 0

Answer: 24.2

Explanation:

You might be interested in
A 150 g egg is dropped from 3.0 meters. The egg is moving at 4.4 m/s right before it hits the ground. The egg comes to a stop in
algol [13]

Answer: Magnitude of the force exerted on the egg by the ground is 9.2N

Explanation:

Given the following :

Mass of egg (m) = 150g = 0.15kg

Height(h) from which egg is dropped = 3m

velocity of egg before hitting the ground (u) = 4.4m/s

Final velocity of egg (V) = 0

Time taken (t) = 0.072s

Magnitude of the force exerted on the egg by the ground can be found by applying Newton's 2nd law:

Momentum = mass × velocity

From Newton's second law:

Force = mass × change in Velocity with time ;

That is

F = m * ΔV / t

Inputting our values

F = 0.15 * (4.4 - 0) / 0.072

F = 0.15 × (4.4 / 0.072)

F = 0.15 × 61.11

F = 9.16N

F = 9.2N

8 0
2 years ago
A myopic (nearsighted) lawyer has a far point of 60.0 cm. What is the diopter value of suitable corrective contacts?
Vlada [557]

Answer:

P = -1.67 dP

Explanation:

given,

myopic lawyer has a far point of = 60.0 cm = 0.6 m

If a person is suffering from myopia then he cannot see the farthest object clearly.

Image of far object does not form on the retina so, the image appear to be blur.

using lens formula

      \dfrac{1}{v}-\dfrac{1}{u} = \dfrac{1}{f}

                -\dfrac{1}{0.6} = \dfrac{1}{f}

                     \dfrac{1}{f} =P

                              P = -\dfrac{1}{0.6}

                              P = -1.67 dP

6 0
2 years ago
HELP ME PLEASE *50 points*
aev [14]
Their is no document for us to look at , can you add it so i can help you
8 0
3 years ago
Read 2 more answers
The larger the push, the larger the change in velocity. This is an example of Newton's Second Law of Motion which states that th
Mars2501 [29]

Answer:

According to Newton's 2nd law

The force acting on a body produces acceleration in its direction which is directly propotional to the force but inversly propotinal to the mass of tbe body.

Explanation:

a = F/m

F = ma

Where( F) is force (m) is mass and (a) is acceleration.

6 0
3 years ago
Why is the top of a wave called a crest
Molodets [167]

Answer: A crest is the highest point the medium rises to and a trough is the lowest point the medium sinks to. It is also a point on the wave where the displacement of the medium is at a maximum.

4 0
3 years ago
Other questions:
  • there are 1000 g in every kilogram of a box has a mass of 483 g what is the mass of the box in kilogram
    14·1 answer
  • Which type of energy is produced
    7·1 answer
  • Which derived quantity might be measured in mm^3
    7·1 answer
  • You and your dog are walking along a pond. Your dog looks into the still water and is startled to see its reflection. Which phen
    13·1 answer
  • Two identical balls are at rest and side by side at the top of a hill. You let one ball, A, start rolling down the hill. A littl
    14·1 answer
  • A 200 turn coil is in a uniform magnetic field that is decreasing at the rate 0.20 T/s. The coil is perpendicular to the field a
    14·1 answer
  • According to the Doppler effect, the __________ of sound waves will determine the pitch of the sound.
    13·1 answer
  • What is happening when an oxygen molecule is formed from two separate oxygen atoms?
    9·1 answer
  • Based on the data given, what is the relationship between mass, gravitational force, speed at impact, and weight of the objects?
    8·1 answer
  • How does science involve creativity
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!