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
Softa [21]
3 years ago
7

A ball is thrown straight downward with a speed of 0.50 meter per second from a height of 4.0 meters. What is the speed of the b

all 0.70 seconds after it is released?
Physics
2 answers:
Bond [772]3 years ago
3 0
Assuming that reaching a height 0 doesn’t stop the ball, and that it accelerates at 9.8 m/s^2, the ball would be traveling at 0.5 + 0.7*9.8 = 7.36 m/s downwards.
Black_prince [1.1K]3 years ago
3 0

Answer: The speed of the ball 0.70 seconds after release is <u><em>7.36 m/s</em></u>

     

Explanation:

Using equation of motion in vertical direction and considering downward direction as positive

v_y=u_y +a_yt

where u_y= 0.50 \frac{m}{s} , a_y=g=9.80 \frac{m}{s^{2}} , t=0.70s

=> v_y=(0.5+9.8\times 0.70) \frac{m}{s}= 7.36\frac{m}{s}

Thus the speed of the ball 0.70 seconds after release is <u><em>7.36 m/s</em></u>

You might be interested in
A 0.290 cm diameter plastic sphere, used in a static electricity demonstration, has a uniformly distributed 30.0 pC charge on it
mojhsa [17]

Answer:

Therefore,

The potential (in V) near its surface is 186.13 Volt.

Explanation:

Given:

Diameter of sphere,

d= 0.29 cm

radius=\dfrac{d}{2}=\dfrac{0.29}{2}=0.145\ cm

r = 0.145\ cm = 0.145\times 10^{-2}\ m

Charge ,

Q = 30.0\ pC=30\times 10^{-12}

To Find:

Electric potential , V = ?

Solution:

Electric Potential at point surface is given as,

V=\dfrac{1}{4\pi\epsilon_{0}}\times \dfrac{Q}{r}

Where,  

V= Electric potential,  

ε0 = permeability free space = 8.85 × 10–12 F/m

Q = Charge  

r = Radius  

Substituting the values we get

V=\dfrac{1}{4\times 3.14\times 8.85\times 10^{-12}}\times \dfrac{30\times 10^{-12}}{0.145\times 10^{-2}}

V=\dfrac{30}{16.117\times 10^{-2}}=186.13\ Volt

Therefore,

The potential (in V) near its surface is 186.13 Volt.

3 0
4 years ago
Suppose you push a toy train with a force of 3 N east. The train has a mass of 0.5 kg. What is its acceleration?
Sergeu [11.5K]
The answer u are looking for is not a b or d it is c <span />
8 0
4 years ago
An ideal air-filled parallel plate capacitor with plate a separation of 4.0 cm has a plate area of 0.040 m2. what is the capacit
irga5000 [103]

An ideal air-filled parallel plate capacitor with plate a separation of 4.0 cm has a plate area of 0.040 m2. what is the capacitance of this capacitor with air between these plates<u> 8.9 pF.</u>

An ideal air-filled parallel-plate capacitor has round plates and carries a fixed amount of equal but opposite charge on its plates.

The capacitance of a parallel plate capacitor depends on area of each plate, dielectric medium between the plates and distance between the plates.

The amount of energy stored in a plate capacitor is given by

⇒ U = \frac{Q^{2}}{2C},

where, Q is the stored charge and C is the capacitance,

To learn more about parallel plate capacitor, here

brainly.com/question/12733413

#SPJ4

7 0
2 years ago
For small angles, does the pendulum's period of oscillation depend on initial angular displacement from equilibrium? Explain.
aksik [14]

Answer:

No, the pendulum's period of oscillation does not depend on initial angular displacement.

Explanation:

Given that,

For small angle, the pendulum's period of oscillation depend on initial angular displacement from equilibrium.

We know that,

The time period of pendulum is defined as

T=2\pi\sqrt{\dfrac{l}{g}}

Where, l = length of pendulum

g = acceleration due to gravity

So, The time period of pendulum depends on the length of pendulum and acceleration due to gravity.

It does not depend on the initial angular displacement.

Hence, No, the pendulum's period of oscillation does not depend on initial angular displacement.

6 0
4 years ago
Thomson's cathode ray experiment showed that:
riadik2000 [5.3K]
I believe the best option to go with will be option C. electrons are negatively charged 
4 0
4 years ago
Other questions:
  • The sun is 60° above the horizon. Rays from the sun strike the still surface of a pond and cast a shadow of a stick that is stuc
    15·1 answer
  • A motorcycle is following a car that is traveling at a constant speed on a straight highway. Initially, the car and the motorcyc
    12·1 answer
  • How many states of matter do you think are in the photo? Describe at least two.
    10·1 answer
  • Given that the velocity of blood pumping through the aorta is about 30 cm/s, what is the total current of the blood passing thro
    8·1 answer
  • Give 2 ways to increase the temperature of gas ​
    14·1 answer
  • The red team hits the ball over the net in 2 hits and it hits on the floor 2 times before the
    15·1 answer
  • A car runs 4200m on a straight path in 40 minute. find its velocity?​
    14·1 answer
  • How long it take a train to cover 630km having a speed of 30 km/hr​
    5·1 answer
  • What is the likely identity of a metal if a sample has a mass of 63.5 g when measured in air and an apparent mass of 60.2 g when
    10·1 answer
  • How much energy is required to raise the temperature of 5.0 g of silver from 298 K to<br> 334 K?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!