What is the acceleration of a ball traveling horizontally with an initial velocity of 20 meters/second and, 2.0 seconds later, a velocity of 30 meters/second?

Answers

Answer 1

Answer: The acceleration of the ball is 5 m/s^2. This can be calculated using a formula that relates the change in velocity, acceleration, and time. This formula is:

Vf = Vi + at

where:
Vf = final velocity
Vi = initial velocity
a = acceleration
t = time

Substituting the values gives:

30 = 20 + a(2)
a = 5 m/s^2 --> Final Answer

Answer 2

Answer:

Answer:

5.0 meters/second^2

I hope this helps!!

Explanation:

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BRAINIEST BRAINIEST BRAINIEST BRAINIEST!!Please help me out!!A motorcyclist is traveling east along a straight road. What is the velocity (inmeters per second) if it takes him 3 s to reach 60 meters? (Submit a numberresponse only!)

What happens to an earthquake's S-waves when they strike the core?A) They bounce off
B) They are absorbed
C) The change into P-waves
D) They change into L-waves

Answers

Answer:

B) They are absorbed

Explanation:

B is correct because S waves can only travel through solid materials. When they hit liquid materials they are absorbed in and undetectable.

Answer:

B) They are absorbed

Explanation:

When they hit the liquid core, S-waves are no longer able to be detected. While P-waves bounce off the liquid core, S-waves are absorbed at the core.

Examine the false statement. Scientists can directly observe the half-life of all radioactive elements. What option rewords the statement so that it is true? Select all that apply. Scientists can calculate the rate of nuclear decay for all radioactive elements using half-life. Scientists can calculate the half-life of all radioactive elements using the rate of nuclear decay. Scientists cannot directly observe or calculate the rate of nuclear decay for all radioactive elements. Scientists can directly observe the rate of nuclear decay for all radioactive elements.

Answers

Answer:

Scientists can directly observe the rate of nuclear decay for all radioactive elements.

Scientists can calculate the half-life of all radioactive elements using the rate of nuclear decay

Explanation:

I just took a test and got it right

As an object sinks in a fluid, the buoyant force ____.a. increases
c. remains the same
b. decrease
d. depends on the shape

Answers

Beginning when the bottom of the object first touches the water,
and as it descends and more and more of it goes under, the
buoyant force on it increases during that time.

As soon as the object is completely underwater, it doesn't matter
how deep under it is, the buoyant force on it remains the same.

As an object sinks in a fluid, the buoyant force decrease.

Hope this helped.

A ball is dropped off a bridge and it takes 5 seconds to hit the water below. About how fast is the ball traveling just before it hits the water?

Answers

Explanation:distance between bridge and water as "x"meters

speed=distance * time

speed= x * 5

speed=5x m/s

Final answer:

The speed of a ball dropped off a bridge that takes 5 seconds to reach the ground is calculated using the equation of motion v = gt. With the acceleration due to gravity approximately 9.8 m/s², the ball would be traveling about 49 m/s just before it hits the water.

Explanation:

This question relates to the physics concept of gravity. When an object is dropped off with no initial velocity, the only force acting upon it is gravity. The speed of the falling object can be found using the equation of motion: v = gt, where g is the acceleration due to gravity (approx. 9.8 m/s²) and t is the time the object is in motion. Therefore, for a ball being dropped off a bridge for 5 seconds, the speed just before hitting the water would be approximately 49 m/s (9.8 m/s² * 5s).

Learn more about Speed of Falling Object here:

brainly.com/question/36264616

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When cleaning a storage battery you can use a solution of water and ammonia or solution of water and

Answers

Water and baking soda can be used, too.

L 10. A car with a mass of 2,000 kilograms is moving around a circular curve at a uniform velocity of 25 meters per second. The curve has a radius of 80 meters. What is the centripetal force on the car?

Answers

Centripetal Force, F = mv²/r

Where m = mass in kg, v = velocity in m/s and r = radius of curvature in m.

Centripetal Force, F = 2000 * 25² / 80. Use your calculator.

F = 15 625 N.

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