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
kirill [66]
3 years ago
11

22. A ball is thrown horizontally from the roof of a building 12 m tall with a speed of 3.1 m/s.

Physics
1 answer:
zysi [14]3 years ago
5 0

Answer:

a) t = 1.6 s

b) d = 4.9 m

c) v = 16 m/s

d) θ = 79°

Explanation:

time of fall

t = √(2h/g) = √(2(12)/9.8) = 1.5649... s

d = vt = 3.1(1.56) = 4.8512...

vertical velocity vy = at = 9.8(1.56) = 15.336... m/s

v = √(15.336² + 3.1²) = 15.6464... m/s

θ = arctan(15.336/3.1) = 78.5724...°

You might be interested in
Astronauts aboard the U.S.S. Burger decide to fire the rocket thrusters for 3.0 seconds to make a course correction. While the t
Cloud [144]

Answer:

340 m/s

Solution:

As per the question;

Time, t = 3.0 s

Total distance moved by the ship, d = 10,500 km

The increase in speed, v = 340 m/s

Now,

To calculate the U.S.S Burger's change in speed, \Delta V:

The final velocity is given by:

v_{f} = 340 + v_{i}                      (1)

where

v_{f} = final\ velocity

v_{i} = initial\ velocity

Also, the change in velocity is given by:

\Delta v = v_{f} - v_{i}                    (2)

Now, from eqn (1) and (2):

\Delta = 340 + v_{i} - v_{i} = 340\ m/s

8 0
3 years ago
An unfortunate 18 kg monkey falls from a 40 m tall tree. What is the monkeys final velocity just befor he impacts the ground.? a
zalisa [80]
The correct answer is c) 28 m/s.
Let's find the step-by-step solution. The motion of the monkey is an uniformly accelerated motion, with acceleration equal to g=9.81 m/s^2. The initial velocity of the monkey is zero, while the distance covered is S=40 m. Therefore, we can use the following relationship to find vf, the final velocity of the monkey:
2aS=v_f^2-v_i^2=v_f^2
from which
v_f= \sqrt{2aS}= \sqrt{2\cdot 9.81 m/s^2 \cdot 40 m}=28 m/s
5 0
3 years ago
6. A 2000 kg spacecraft is located 9.2x10 m from the center of the earth. The mass of the earth
Zina [86]

The answer is -i, trust me.

3 0
3 years ago
What is the acceleration of a 4,000 kg car pushed with a<br> force of 12,000 N?
jek_recluse [69]

Answer:

3 m/s

Explanation:

A= F/m

12,000/ 4000 = 3

8 0
3 years ago
Read 2 more answers
What are chemical properties
natta225 [31]
Cacu. H2SO.chemical properties related to the used in chemical property
3 0
3 years ago
Read 2 more answers
Other questions:
  • A proton is moving toward a stationary charged particle. Which statement correctly describes an energy change that could occur a
    7·2 answers
  • An empty office chair is at rest on a floor. Consider the following forces:. 1. A downward force due to gravity;. 2. An upward forc
    7·1 answer
  • What is the rule for placing an ammeter​
    8·1 answer
  • Which of the following is true about a hybrid? * A. It combines the gas-powered engine and an electric motor into one system. B.
    14·1 answer
  • A straight line with a negative slope on a velocity-time graph indicates which of the following?
    6·1 answer
  • What is the maximum mass that can hang without sinking from a 50-cm diameter Styrofoam sphere in water
    12·1 answer
  • What is the Law of Conservation of Energy?
    6·2 answers
  • A student's room has a TV (250 W) ,heater (1150 W) and lamp (200 W) Electricity costs 10 fills per KWh. Calculate how much it wo
    15·1 answer
  • 1 ) when a ball is projected upwords its time of rising is ...............the time of falling .
    8·1 answer
  • The figure below shows a dipole. If the positive particle has a charge of 37.3 mC and the particles are 3.08 mm apart, what is t
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!