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
frozen [14]
3 years ago
7

A rock is thrown straight up. What is the net external force acting on the rock when it is at the top of its trajectory (ignorin

g ar resistance)? a)There is none b)Gravity c)A normal force d)Thrust
Physics
1 answer:
Nat2105 [25]3 years ago
8 0

Answer:

b) Gravity

Explanation:

Gravity acts all of the time, when you apply force to a projectile it has to be more than the forces of the gravity and air resistance together so the projectile can move,  when the rock is at the top of its trajectory the force that you applied at the beginning is getting lost, so the other forces (air resistance and gravity) make the rock fall to the floor.

You might be interested in
HELP the decay curve of twizzlers sheet!!!!!
Vinvika [58]
Ok so the first thing you need to do is im not gonna help you
7 0
2 years ago
Using simple language, explain how your demonstration shows the effect of distance on electric forces. Use the terms electric ch
Eddi Din [679]

Explanation:

For a charge concentrated nearly at a point, the electric field is directly proportional to the amount of charge; it is inversely proportional to the square of the distance radially away from the centre of the source charge and depends also upon the nature of the medium.

4 0
3 years ago
Read 2 more answers
1. Identify Which of the following is not a factor of global climate change:
Agata [3.3K]

Answer:

B.movement of continents

3 0
2 years ago
Nvm i got the answer but <br> free points
faust18 [17]

Answer:

thank you 谢谢

Explanation:

8 0
3 years ago
Read 2 more answers
What is the answer for this question (4x³)²​
Delvig [45]
16x to the power of 6
6 0
3 years ago
Read 2 more answers
Other questions:
  • A high diver of mass 74.0 kg jumps off a board 9.00 m above the water. If his downward motion is stopped 2.50 seconds after he e
    6·1 answer
  • The student toses a ball into the air and then watches the ball fall back down to earth. When does the ball have the most potent
    14·1 answer
  • A 2.0-kilogram mass is located 3.0 meters above
    14·2 answers
  • The __________ is the part of the brain thought to be responsible for a person's hunger drive.
    12·2 answers
  • Why are the meters squared in the formula to calculate acceleration?
    13·1 answer
  • . An L-R-C series circuit has C = 4.80 mF, L = 0.520 H, and source voltage amplitude V = 56.0 V. The source is operated at the r
    9·1 answer
  • Which explanations provide support for continental drift theory? Check all that apply.
    6·1 answer
  • Which copper wire would have the lowest resistance?
    10·2 answers
  • In any ecosystem_______, are the point of entry for new energy
    11·2 answers
  • Gabrielle has just upgraded her oil-burning furnace. Her new furnace takes cool air from outside and passes it through the heat
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!