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
Angelina_Jolie [31]
3 years ago
6

a diver of mass 101 kg jumps upward off a diving board into water. Diving board is 6m above water. Diver has a speed of 1.2m/s.

based on speed how high above the board will the diver reach?
Physics
1 answer:
8090 [49]3 years ago
5 0
When the diver reaches maximum height, the upward velocity will be zero.

We shall use the formula
v^2 = u^2 - 2gh
where 
v = 0 (velocity at maximum height)
u = 1.2 m/s, intial upward velocity
g = -9.8 m/s^2, gravitational acceleration (downward)
h = maximum height attained above the diving board.

Therefore
0 = 1.2^2 - 2*9.8*h
h = 1.2^2/(2*9.8) = 0.0735 m

Answer: 0.074 m (nearest thousandth)
You might be interested in
A small object with momentum 7.0 kg∙m/s approaches head-on a large object at rest. The small object bounces straight back with a
EastWind [94]

Answer:

The magnitude of the large object's momentum change is 3 kilogram-meters per second.

Explanation:

Under the assumption that no external forces are exerted on both the small object and the big object, whose situation is described by the Principle of Momentum Conservation:

p_{S,1}+p_{B,1} = p_{S,2}+p_{B,2} (1)

Where:

p_{S,1}, p_{S,2} - Initial and final momemtums of the small object, measured in kilogram-meters per second.

p_{B,1}, p_{B,2} - Initial and final momentums of the big object, measured in kilogram-meters per second.

If we know that p_{S,1} = 7\,\frac{kg\cdot m}{s}, p_{B,1} = 0\,\frac{kg\cdot m}{s} and p_{S, 2} = 4\,\frac{kg\cdot m}{s}, then the final momentum of the big object is:

7\,\frac{kg\cdot m}{s} + 0\,\frac{kg\cdot m}{s} = 4\,\frac{kg\cdot m}{s}+p_{B,2}

p_{B,2} = 3\,\frac{kg\cdot m}{s}

The magnitude of the large object's momentum change is:

p_{B,2}-p_{B,1} = 3\,\frac{kg\cdot m}{s}-0\,\frac{kg\cdot m}{s}

p_{B,2}-p_{B,1} = 3\,\frac{kg\cdot m}{s}

The magnitude of the large object's momentum change is 3 kilogram-meters per second.

4 0
3 years ago
two identical small charged spheres are a certain distance apart, and each one initially experiences an electrostatic force of m
alexdok [17]
The electrostatic force is directly proportional to the product of the charges, by Coulomb's law.

F α Qq

If the charges are now half the initial charges: 

<span>F α (1/2)Q *(1/2)q
</span>
F α (1/4)Q<span>q

The new force when the charges are each halved is (1/4) the first initial force experienced at full charge.</span>
4 0
3 years ago
Read 2 more answers
How many newtons of force are represented by the following amount: 3 kg.m/sec2
alekssr [168]
I believe the answer is 3 Newtons!
5 0
3 years ago
POSSIE
kotegsom [21]

Answer:

please find attached pdf

Explanation:

Download pdf
3 0
3 years ago
Without the wheels, a bicycle frame has a mass of 6.71 kg. Each of the wheels can be roughly modeled as a uniform solid disk wit
dalvyx [7]

Answer:43.311 J

Explanation:

Given

mass of frame\left ( m_f\right )=6.71 kg

mass of  wheel \left ( m_w\right )=0.820 kg

radius of wheel\left ( r\right )=0.343 m

v=3.22 m/s

Moment of inertia of each wheel\left ( I\right )=\frac{1}{2}mr^2[/tex]

I=0.0482 kg-m^2

kinetic Energy of whole cycle=Kinetic energy of wheels and frame+rotational energy of Wheels

K.E.=\frac{1}{2}\left ( m_f+m_w\right )v^2+2\times \frac{1}{2}I\omega ^2

K.E.=\frac{1}{2}\left ( 6.71+0.820\right )3.22^2+2\times \frac{1}{2}0.0482\times \left ( \frac{3.22}{0.343}\right )^2

K.E.=39.037+4.274=43.311J

4 0
3 years ago
Other questions:
  • The cruise control of megan's truck is set at 65 miles per hour, but her actual speed may vary by as much as 5 miles per hour. W
    10·2 answers
  • The contribution of Tycho Brahe was primarily his
    14·1 answer
  • If a train is going 60 m/s hits the brakes, and it takes the train 1 minute 25 seconds to stop, what is the train’s acceleration
    12·1 answer
  • Perspex has a greater refractive index than ice. Explain what happens to the speed and direction of a ray of light at it travels
    14·1 answer
  • Which changes in an electric motor will make the motor stronger? Check all that apply. using a stronger permanent magnet using a
    6·2 answers
  • 1. The Sun orbits the center of the Milky Way.<br> True False
    7·2 answers
  • Which statement about plant and animal cells is true?
    7·1 answer
  • Andrew is riding his bike is riding in a circle that has a radius of 10 m. He keeps
    5·1 answer
  • 4
    8·1 answer
  • We need to find the launch velocity of our new marble launcher. we know that it will launch a 25g marble to a distance of 73 cm,
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!