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
inysia [295]
3 years ago
15

a ball at the end of a string is whirled in a horizontal circle. if it takes 2 seconds to make a revolution and the strong lengt

h is 2 m , how fast is the ball moving ? How much is it being accelerated
Physics
1 answer:
Taya2010 [7]3 years ago
8 0

You can calculate the speed of the ball by the distance it travels divided by the time.

Length of string = 2m

Circumference of circle = 2*radius*π = 4*pi = ~12.6 meters

Speed = distance/time = 12.6m/2s = 6.28m/s

Acceleration = V²/R where the velocity at any one point is the same as the speed.

acceleration = (6.28)²/2 = ~19.72m/s²

You might be interested in
What is 4.6 billion years old in the big band theory
erastova [34]

Answer:

solar system

8 0
4 years ago
How does kinetic energy affect the stopping distance of a small vehicle compared to a large vehicle?
zhannawk [14.2K]
The equation for kinetic energy is KE=1/2mv^2
So if the small vehicle AND the large vehicle both had the same speed, the large vehicle would have more kinetic energy since it has greater mass, resulting in a much more larger stopping distance than the smaller car.
6 0
4 years ago
A car runs into a flying bug. Why does the bug accelerate more in the collision? *
aleksandr82 [10.1K]

Answer:

It has less mass than the car

Explanation:

Both car and bug have the same amount of force acting on them. As the bug mass is much smaller, it sees a greater acceleration

F = ma

5 0
3 years ago
Describe how air resistance would affect a falling object ​
aivan3 [116]

Answer:

With air resistance, acceleration throughout a fall gets less than gravity (g) because air resistance affects the movement of the falling object by slowing it down. How much it slows the object down depends on the surface area of the object and its speed

Explanation:

PLZ MARK AS THE BRAINLIEST

HAVE A GOOD DAY

: )

4 0
3 years ago
In complete sentences, describe what causes the phases of the moon. (4 points)
g100num [7]
The light from the sun is reflected by the moon, we see the part of the moon that the sun shines on.The change in the phases are created from the rotation of the moon around earth.We see a full moon when the sun is opposite of the moon. The side the sun shines on the moon is what we see.
7 0
3 years ago
Other questions:
  • What negatively charged particle was discovered through the study of cathode rays?
    7·1 answer
  • Electric force is only dependent on charge. true or false?
    11·2 answers
  • If the Universe was born at the Big Bang, what existed before then?
    10·1 answer
  • Um corpo de massa 2,5kg é lançado verticalmente para cima. Se o sistema for considerado conservativo e no instante em que ele é
    8·1 answer
  • What volume is occupied by one mole of gas at stp?
    5·1 answer
  • Pressure is dependent on how much force is exerted in what amount of area.<br> t or f
    6·1 answer
  • Unpolarized light, with an intensity of I0, is incident on an ideal polarizer. A second ideal polarizer is immediately behind th
    5·1 answer
  • There are fiber optic telephone cables connecting North America and Europe, lying on the bottom of the Atlantic ocean. The wire
    11·1 answer
  • Someone help me please
    6·2 answers
  • A sphere of radius 3.09 cm and a spherical shell of radius 7.97 cm are rolling without slipping along the same floor. The two ob
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!