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
Elan Coil [88]
3 years ago
9

A ball thrown vertically upward is caught by the thrower after 1.76 s. find the initial velocity of the ball. the acceleration o

f gravity is 9.8 m/
Physics
1 answer:
konstantin123 [22]3 years ago
7 0

Answer;

  = 8.624 m/s

Explanation;

Time of flight= 4s. (0.88 s to reach highest point and 0.88 s to come back from highest point.)

Neglecting air resistance, the time of ascend is equal to time of descend for projectile.

It means the ball is at the highest point at time 0.88 s.

Using the equation;

V = Vo + at

Where, V is the final velocity which is Zero, Vo is the initial velocity ,g is the gravitational acceleration, 9.8 m/s², t is the time.

V = Vo - gt ;   g is negative because it is against the gravity .

Vo = gt

     = 9.8 m/s² × 0.88 s

     = 8.624 m/s

You might be interested in
A 30 kg mass and a 20 kg mass are joined by a light rigid rod and this system is free to rotate in the plane of the page about a
stepan [7]

55 J

Explanation:

Kinetic energy is given as: 0.5MV^2 where M is the mass and V is the speed of rotation. Since the masses are point masses, we calculate the point mass for each mass.

M1 = 30*0.2^2 = 1.2kgm^2

M2 = 20*0.4^2 = 3.2kgm^2

V = 5 rad/s

Calculating using the formula above, we obtain :

0.5(1.2+3.2)5^2 =0.5*4.4*25 = 55 J

3 0
3 years ago
Read 2 more answers
"How did your current and voltage measurements differ between the series and parallel circuits you created
irakobra [83]

Answer:

Series circuit:

The voltage that is measured across the circuit is different.

The current measured in a series circuit remains the same at all points in the circuit.

Parallel circuit:

The current measured across each resistor varies

The voltage measured across a parallel circuit will remain the same

Explanation:

Series and parallel circuits behave differently when it comes to the circulation of current and the interaction with a potential difference.

In a series circuit, the resistances are connected end to end. As a result, the voltage that is measured across the circuit is different once resistance is encountered. However, the current measured in a series circuit remains the same at all points in the circuit.

A parallel circuit behaves in an exactly opposite manner to the series circuit. In a parallel circuit, the resistances are connected side by side. As a result of this, the current measured across each resistor varies as there are circuit branches through which electric current can flow into. On the other hand, the voltage measured across a parallel circuit will remain the same

4 0
3 years ago
According to gay-lussac’s law: select one:
DaniilM [7]
Gay-Lussac's Law states
P1 / T1 = P2 / T2
So the answer is b

8 0
3 years ago
Read 2 more answers
In a collision, a 25.0 kg mass moving at 3.0 m/s transfers all of its momentum to a 5.0 kg mass.
nadezda [96]

Answer:

Explanation:

The momentum of the 25 kg mass is

p=mv

p=25kg*3m/s= 75kg*m/s

If this whole momentum of the object is transferred to the 5.0 kg object then according to the law of conservation of momentum, the momentum of the 25.0 kg object must be transferred to the 5.0 kg object:

75kg*m/s = 5.0kg*v

v=\dfrac{75}{5}

\boxed{v=15m/s}

8 0
3 years ago
When jeremiah stands in a swimming pool and looks at hid feet, his legs appear to be bent. Which is the term for this phenomenon
ValentinkaMS [17]
D: Refraction
Explanation: Refraction occurs when a medium bends the light rays of an object. Like water for instance as an example of a medium.
8 0
2 years ago
Other questions:
  • A loaf of bread is removed from an oven and is left sitting in the kitchen to cool. Its temperature t minutes after being remove
    12·1 answer
  • What evidence do scientists have that earth has been hit by large objects like asteroids in the past
    9·1 answer
  • Two workers are sliding 470 kg crate across the floor. One worker pushes forward on the crate with a force of 450 N while the ot
    14·1 answer
  • If a bird applies a 5 N upward force on a branch to lift the branch of ground to a
    11·1 answer
  • What is the difference between methane and fluorinated gases
    15·1 answer
  • As the skydiver falls to Earth, she experiences positive acceleration due to
    12·2 answers
  • Which is an angiosperm. A.fern B.moss C.pine D.tulip
    14·2 answers
  • A triangle can have at most how many right angle?
    8·2 answers
  • Will both buzzers sound in this circuit?
    15·1 answer
  • for every 120 joules of energy input a car waste 85 joules, find the useful energy output of the car?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!