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
Hitman42 [59]
3 years ago
9

a rock is dropped from a height of 80 m and is in free fall what is the velocity of as it reaches the ground 4.0 seconds later

Physics
1 answer:
Marta_Voda [28]3 years ago
8 0
Velocity = displacement (distance)/time

v=80m/4s

v=20m/s

velocity = 20 meters per second
You might be interested in
Question 6 (15 points)
aleksandrvk [35]

Answer:

that would be newtons 3rd law

Explanation:

because its how it is

3 0
3 years ago
What is the reaction for P₄ + 5 O₂ --> 2 P₂O₅
mixas84 [53]

Answer:

Combination or synthesis

Explanation:

The reaction is a combination or synthesis reaction in which two or more substances combines to give a single product.

In such a reaction there is formation of compounds from the union of their constituent elements.

 The driving force for such reactions is the large and negative heat of formation of the product.

So, this is a combination reaction.

7 0
3 years ago
Which one doesn't belong in the group? oxygen, sulfur, selenium,
vlada-n [284]
It’s gonna be Oxygen ....
3 0
3 years ago
If a neutral metal comb is held near an object with a negative charge, the Como become charged by
LenKa [72]
The local charging of the comb is due to induction. The negative object's charge pushes electrons in the comb away from the side close to the charged object causing that part to be positively charged. Note that the comb's net charge is still zero provided it doesn't touch the object. When you move the comb away its electrons will redistribute.
4 0
3 years ago
Read 2 more answers
Hurryyyyyyyy
padilas [110]
The answer would be C. Gamma Rays and High Frequency EM waves travel at the speed of light and are transverse waves.
7 0
3 years ago
Read 2 more answers
Other questions:
  • An approaching storm is moving at 15 km an hour what do you need to know to determine its velocity
    7·1 answer
  • According to Newton's third law of motion, if you push against a wall, the wall will __________.
    12·2 answers
  • The key difference between the binomial and hypergeometric distribution is that
    14·1 answer
  • A sequence of pitches occurring one after another is perceived: A. horizontally B. vertically C. texturally D. mechanically
    15·1 answer
  • Suppose you found a mineral crystal that looked like topaz. what two minerals could you use in a scratch test to help determine
    7·1 answer
  • Which is a characteristic of projectile motion?
    5·2 answers
  • An electric saw uses a circular spinning blade to slice through wood. When you start the saw, the motor needs 2.00 seconds of co
    12·1 answer
  • A student measured the volume of three rocks. The diagram above shows the
    5·1 answer
  • Help me! Btw he’s playing golf.
    13·1 answer
  • What happens to an object's gravitational potential energy as it falls from some height?​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!