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
Natasha2012 [34]
1 year ago
6

20. Q: How long will it take for an apple falling from a 29.4m-tall tree to hit the ground?

Physics
1 answer:
saul85 [17]1 year ago
7 0

Answer:

2.45s

Explanation:

is explanation needed too?

You might be interested in
**HELP ASAP**
Tcecarenko [31]
The answer of this question is B.
5 0
3 years ago
Two cars collide and come to a complete stop. where did all of their energy go?
MA_775_DIABLO [31]
Most of the energy will be absorbed by the materials that make up the cars, causing them to deform. The energy will also be converted into sound energy, causing a loud bang upon collision. Also, some energy will be converted to thermal energy, which will cause the cars to heat up slightly.
3 0
3 years ago
Hii can someone please doo this! 50 pointss.
andrey2020 [161]

Answer:

The periodic table illustrate some of the elements from Hydrogen to Calcium

8 0
3 years ago
49 = 1/2gt²
BaLLatris [955]

Answer:

e  son

Explanation:

se lo on

7 0
3 years ago
The Great Sandini is a 60 kg circus performer who is shotfrom a cannon (actually a spring gun). You don't find many men ofhis ca
d1i1m1o1n [39]

Answer:

V=15.3 m/s

Explanation:

To solve this problem, we have to use the energy conservation theorem:

U_e+K_i+U_{gi}+W_{friction}=K_f+U_{gf}

the elastic potencial energy is given by:

U_e=\frac{1}{2}*k*x^2\\U_e=\frac{1}{2}*1100N/m*(4m)^2\\U_e=8800J

The work is defined as:

W_{friction}=F_f*d*cos(\theta)\\W_{friction}=40N*2.5m*cos(180)\\W_{friction}=-100J

this work is negative because is opposite to the movement.

The gravitational potencial energy at 2.5 m aboves is given by:

U_{gf}=m*g*h\\U_{gf}=60kg*9.8*2.5\\U_{gf}=1470J

the gravitational potential energy at the ground and the kinetic energy at the begining are 0.

8800J+0+0+-100J=\frac{1}{2}*62kg*v^2+1470J\\v=\sqrt{\frac{2(8800J-100J-1470J)}{62kg}}\\v=15.3m/s

3 0
3 years ago
Other questions:
  • A car, initially traveling at 15 meters per second
    15·1 answer
  • Will give brainlist if answer question!
    9·1 answer
  • A water skier lets go of the tow rope upon leaving the end ofa
    13·1 answer
  • Advection fog occurs when humid air move over cold ground
    8·1 answer
  • A large lightning bolt is observed to have a 19500 A current and move 36 C of charge. What was its duration?
    14·1 answer
  • How does area affect the pressure?​
    10·1 answer
  • 10. At point A, a runner is jogging 5 m/s. Forty seconds later, at point B
    13·1 answer
  • I NEED HELP ASAP
    12·1 answer
  • What is the kinetic energy of a 36N toy car which is moving at 5 m/s?
    10·1 answer
  • How does the atmospheric temperature and size of inner planets compare with those of outer planets?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!