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
Kryger [21]
3 years ago
14

An astronaut on the moon drops a rock from rest. The rock falls 0.8m in one second of falling time. If the dropped rock fell for

a total of two seconds of time instead of 1 second, then the distance traveled would be:____.
A) The same.
B) Doubled.
C) Tripled.
D) Quadruple.
E) None of the above.
Physics
1 answer:
Rudiy273 years ago
4 0

Answer:

D) Quadruple.

Explanation:

We will use the second equation of motion to solve this problem:

s = v_it + \frac{1}{2}gt^2

where,

s = distance travelled by the rock

vi = initial speed of rock = 0 m/s

t = time taken

g = acceleration due to gravity on the surface of the moon

Therefore,

s = (0\ m/s)t+\frac{1}{2}gt^2\\\\s =\frac{1}{2}gt^2----------- equation (1)

Now, we double the time:

s' = \frac{1}{2}g(2t)^2\\\\s' = 4(\frac{1}{2}gt^2)

using equation (1):

s' = 4s

Hence, the correct option is:

<u>D) Quadruple.</u>

You might be interested in
Boyle's law balloon was filled to a volume of 2.50 l when the temperature was 30.0∘
aliina [53]

To solve this we assume that the gas inside the balloon is an ideal gas. Then, we can use the ideal gas equation which is expressed as PV = nRT. At a constant pressure and number of moles of the gas the ratio T/V is equal to some constant. At another set of condition of temperature, the constant is still the same. Calculations are as follows:

T1 / V1 = T2 / V2

V2 = T2 x V1 / T1

V2 =284.15 x 2.50 / 303.15

<span>V2 = 2.34 L</span>

7 0
3 years ago
In the eastern US, hurricanesusually form over the warm waters of the Caribbean Sea and travel north. When they are over the col
garik1379 [7]

Answer:

Less powerful

Explanation:

Hurricanes rely on warm water. It sucks heat energy from the water to use for fuel. Warmer water means more moisture, which also mean a bigger and/or stronger hurricane. The North Atlantic is definitely much colder than the Caribbean so the hurricane will not have much fuel.

Have a great day!

8 0
3 years ago
At high elevations or high latitudes, some of the water that falls on land does not immediately soak in , run off, evaporate or
LUCKY_DIMON [66]

Answer:

The water is stored in ice sheets and as snow

Explanation:

Temperature reduces with an increase in altitudes. The standard laps rate is 6.5°C per 1,000 m gained in elevation

At very high elevations, therefore,  the air is usually very cold such that when an elevation of 4,500 meters is reached at the equator, it is possible to observe snowfall and the water remain temporarily stored on the surface of the mountain as ice and snow

7 0
3 years ago
A squirrel sitting on the ground starts to run with an acceleration of 5.1 m/s².
Svetradugi [14.3K]

Answer:

0.159

Explanation:

the formula to find its is 1÷2*gt^2

5 0
2 years ago
Read 2 more answers
The position of a 55 g oscillating mass is given by x(t)=(2.0cm)cos(10t), where t is in seconds. determine the velocity at t=0.4
NNADVOKAT [17]
The position of the mass is given by (in cm):
x(t)=2 \cos (10 t)
The velocity is the derivative of the position:
v(t) =  \frac{dx(t)}{dt} =-10\cdot 2 \sin (10t)=-20 \sin (10t)
Substituting t=0.40 s, we can find the velocity at this time:
v(0.40 s)= -20 \sin (10 \cdot 0.4)=15 cm/s=15 \cdot 10^{-2}m/s
5 0
3 years ago
Read 2 more answers
Other questions:
  • If an apprentice makes 55% of Journeyman wages, what would an apprentice make per hour if the Journeyman scale is $17.64?
    5·1 answer
  • The principle of work states that the ratio of work output to work input is always
    15·1 answer
  • Which of the following is correctly describes a radio wave
    8·2 answers
  • Which causes a rainbow in the sky?
    10·1 answer
  • Using the balanced chemical equation below, calculate how many moles of ammonia would be produced when 9.1 moles of hydrogen gas
    10·1 answer
  • The two basic properties of matter are _
    7·2 answers
  • Balance the following equation: _____ Fe + _____Br2 -----&gt; _____ FeBr3
    14·1 answer
  • A toy of mass 0.155 kg is undergoing simple harmonic motion (SHM) on the end of a horizontal spring with force constant 305 N/m
    13·1 answer
  • An apple is whirled round in a horizontal circle on the end of a string which is tied to the stalk. It is whirled faster and fas
    5·1 answer
  • ASAP if you answer right I will mark brainiest....
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!