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
Illusion [34]
3 years ago
10

You drop a rock off a bridge. When the rock has fallen 4 m, you drop a second rock. As the two rocks continue to fall, what happ

ens to their velocities?
a. Both increase at the same rate.
b. The velocity of the first rock increases faster than the velocity of the second.
c. The velocity of the second rock increases faster than the velocity of the first.
d. Both velocities stay constant.
Physics
1 answer:
Mashutka [201]3 years ago
4 0

Answer:

option A.

Explanation:

The correct answer is option A.

Two rocks are off a bridge first rock is fallen 4  when the second rock is dropped.

Both the rock is dropped under the effect of acceleration due to gravity so, the rate of change of the velocity for both the rock particle will be the same.

Hence, the first rock will reach ground earlier than the second rock because the rate of change of both the rock is at the same rate.

You might be interested in
A leaf is floating on the Surface of the water,what will happen to its movement? Explain
docker41 [41]

Answer:

MRCORRECT has answered the question

Explanation:

surface tension of water helps creatures(mostly of insecta class such as water striders) to walk on water. . it also helps water to move up the xylem tissue ofhigher plants without breaking up

4 0
3 years ago
One of your delivery trucks traveled 1,200 miles on 55 gallons of gas. How many miles per gallon did the truck get? (Round off y
Aleksandr-060686 [28]
The word "Per" means divide

"miles per gallon" is the same as "miles / gallon"

The truck went 1,200 miles
on 55 gallons

1,200 ÷ 55 = 21.81
7 0
3 years ago
Read 2 more answers
Which has more inertia a shopping cart full or groceries or an empty shopping cart?
morpeh [17]
I think that  the shopping cart full of groceries has more inertia because it is the one with more tendency to do nothing or be still.
5 0
3 years ago
You want to move a 4- kg bookcase to a different place in the living room. If u push with a force of 65 n and the bookcase accel
IrinaK [193]

Answer:

1.65

Explanation:

The equation of the forces along the horizontal direction is:

F-F_f = ma (1)

where

F = 65 N is the force applied with the push

F_f is the frictional force

m = 4 kg is the mass

a=0.12 m/s^2 is the acceleration

The force of friction can be written as F_f = \mu R (2), where

\mu is the coefficient of kinetic friction

R is the normal force exerted by the floor

The equation of forces along the vertical direction is

R-mg=0 (3)

since the bookcase is in equilibrium. Substituting (2) and (3) into (1), we find

F-\mu mg = ma

And solving for \mu,

\mu = \frac{F-ma}{mg}=\frac{65-(4)(0.12)}{4(9.8)}=1.65

7 0
3 years ago
Raul dug a hole in his yard to repair a water pipe. It took him 2 seconds to apply a force of 50 Newtons to push the shovel 0.25
Sergeu [11.5K]

Answer:

Option B. 6.25 J/S

Explanation:

Data obtained from the question include:

t (time) = 2secs

F (force) = 50N

d (distance) = 0.25m

P (power) =?

The power can be obtained by using the formula P = workdone/time.

P = workdone / time

P = (50 x 0.25)/ 2

P = 6.25J/s

3 0
3 years ago
Other questions:
  • A water wave has a wavelength of 204 m and a frequency of 0.5 Hz. How far does it travel in 1 s?
    7·1 answer
  • WHICH IS THE HARDEST SUBSTANCE IN EARTH?
    7·2 answers
  • 1)which of the following is not a benefit of stretching
    12·1 answer
  • If a compound has a very low melting and boiling point, it is likely that the compound possesses mainly which type of intermolec
    5·1 answer
  • Please help with these 3 questions...thank you so much! They are about Physical Science and balanced reactions, thanks again!
    14·1 answer
  • 20 POINTS MULTIPLE CHOICE
    14·1 answer
  • You want to calculate the density of a marble what is one piece of data that you need A the weight B the volume C how fast the m
    15·2 answers
  • Am i pertty and who do think is going to win the presidential election who do u want to win and why
    11·2 answers
  • Why is the overall charge of the atom neutral or zero?
    15·1 answer
  • 4)What is the mass of an object weighing<br> 3,000N?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!