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
dybincka [34]
3 years ago
9

A girl on a bridge throws a rock

Physics
1 answer:
Anon25 [30]3 years ago
6 0

t = 1.3 s.

To solve this exercise we have to use the freefall equation t = (v-v₀)/g. v = 0 due the final velocity when the rock reach the ground is 0.

With v₀ = -12.5m/s and g = 9.8m/s²

t = -(-12.5m/s)/9.8m/s²

t = 1.3 s

You might be interested in
How does the law of conservation of energy apply to a light bulb? the electrical energy put into the light bulb equals the light
andrew-mc [135]
<span>The law of conservation of energy applies to a light bulb because the energy is being transformed into light and the light bulb is acting as a catalyst. The light bulb itself is not a form of energy, however when in combination with the electrical outlet to the bulb the electricity heats up the metal interior forming it into light. according to the law of conservation energy cannot be created or destroyed, but instead is formed into different kinds of energy. In relation to a light bulb electrical currents are forming heat energy by heating up the metal interior, then the bulb or glass around it allows to radiate light.</span>
7 0
3 years ago
According to ohm's law if you don't change the value of the resistor &amp; you double the voltage in a circuit the amount of cur
Nana76 [90]

They double!! Hope im not too late!!

3 0
3 years ago
Which best describes a difference between laser light and regular light?
Mashcka [7]

Answer:

B

Explanation:

6 0
3 years ago
Braddy connected the loose wire to the battery and created an electromagnet. He picked up 45 thumb tacks with his electromagnet,
Katarina [22]

Answer:

C) Use two batteries instead of one.

Explanation:

-Strength of an electromagnet depends on the electrical current which flows through the wires.

-Two batteries have a higher current than one and thus higher strength in the electromagnet.

3 0
3 years ago
A soccer player kicks a soccer ball at +10.0 m/s at an angle of 60°. What are the horizontal and vertical components of velocity
Nastasia [14]
This seems like a calculus problem. I'm assuming you would use cos and sin. so here's the vertical component +10.0m/s multiplied by sin60 = 8.66 rounded to the hundreths place. Now for horizontal, that would be +10.0m/s multiplied by cos60 = 5. hope this helped.
3 0
3 years ago
Read 2 more answers
Other questions:
  • How do Newton's laws of motion explain why it is important to keep the ice smooth on a hockey rink so that players can
    8·2 answers
  • Which types of electromagnetic wave travels through space the fastest?
    13·1 answer
  • Flywheels are large, massive wheels used to store energy. They can be spun up slowly, then the wheel's energy can be released qu
    8·1 answer
  • A student pushed a 100 N bicycle over a distance of 15 m in 5 s. calculate the power generated.
    8·1 answer
  • Iron (II) hydroxide, whose chemical formula is shown here, is soluble in different solutions. In which solution would the Iron (
    12·1 answer
  • When a gas is compressed, the molecules are pushed closer together causing the gas to ______.
    12·2 answers
  • Why are slow-twitch muscles more beneficial than fast-twitch muscles for cardiorespiratory fitness?
    14·2 answers
  • Calculate the kinetic energy of a 20-kg sled moving 28.0 m/s. Show your work in the space to the right.
    10·1 answer
  • Two identical loudspeakers 2.00 m apart are emitting sound waves into a room where the speed of sound is 340 m/s. Abby is standi
    15·1 answer
  • An ordinary ruler is used to measure the area and its error of a rectangle. It is found that their sides are 5.0 cm long and 2.0
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!