Answer:
5s
Explanation:
initial distance: 0 m
distance: ? (we don't know)
initial velocity: 0 m/s
velocity: 30 m/s
acceleration: 6 [tex]m/s^{2}[/tex]
time: ? (we are looking for)
v = v0 + at
plug the numbers in:
30 = 0 + 6(t)
= 30 = 6t
= t = 5
5s
The free body diagram for an object is
projected. Calculate the net force acting on
the object. If this object is 10 kg,
how/where will it accelerate?The free body diagram for an object is
projected. Calculate the net force acting on
the object. If this object is 10 kg,
how/where will it accelerate?
Answer:
the free-body diagram shows the vectors for all the forces acting on the body. The resultant vector found by summing all the individual vectors represents the net force. Since F = ma, the acceleration vector will point in the same direction as the net force, with a magnitude of F / m
Explanation:
ewan ko kung tama
How do I figure this out?
Step #1: Learn what "displacement" means.
Step #2: Learn what "velocity" means.
Allison (a marathon runner) can run at a steady velocity of 2.8 m/s. How far can Allison run at this speed in 32 minutes?
Answer:
5376 meters per 32 seconds.
Explanation:
Multiplied 2.8 by 60 Making it 168 m/m. Then multiplied that by 32, since it’s 32 minutes, and got 5,376 meters per 32 minutes.
Hope This Helped!
What must differ between the atom of two different elements?
A. protons and neutrons in the nucleus
B. neutrons in the atom
C. electrons in the atom
D. protons in the atom
Answer:
A.protons and neutrons in the nucleus.
i’m not sure if it’s A or B
How do I find force?
Answer:
The force formula is defined by Newton's second law of motion: Force exerted by an object equals mass times acceleration of that object: F = m×a( force = mass×area)
the speed of an object increases by 30 m/s in 10 seconds. what is its acceleration?
Hope this helps you
A force of 36 N pushes a box that is 12.2 kg. The box is sliding horizontally 2.6 m/s to the left. What is the coefficient of friction? (Could you draw a Force Diagram?)
The coefficient of friction on the box sliding to the left is 0.3.
The given parameters;
applied force , F = 36 Nmass of the box, m = 12.2 kgvelocity of the box, v = 2.6 m/sThe acceleration of the box is calculated as follows;
[tex]F = ma\\\\a = \frac{36}{12.2} \\\\a = 2.95 \ m/s^2[/tex]
The coefficient of friction on the box is calculated as follows;
[tex]\mu_k = \frac{a}{g} \\\\\mu_k = \frac{2.95}{9.8} \\\\\mu_k = 0.3[/tex]
Thus, the coefficient of friction on the box is 0.3.
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will give correct answer brainliest
Answer:
I THINK it’s A
Explanation:
Because all the other answers don’t make sense.
Which of the following statements about using knives is FALSE?
Carry knives point down.
When cutting, the knife blade should be parallel to your nails on your guiding hand.
When cutting, lay thumb and forefinger flat on the food your are cutting to hold it firmly in place.
Always cut away from the body.
Answer:
When cutting, lay the thumb and forefinger flat on the food you are cutting to hold it firmly in position
Explanation:
Because it may cut you so avoid it
Rebecca enjoys taking photos. Her father suggests that she study physical science to help improve her photography. How is physical science related to photography?
how is the lens able to change its refractive power?
Answer:
The lens can sharpen the curvature of its front and back surfaces, increasing its focusing power.
Explanation:
A lens can change its refractive power through sharpening of the curvature of its front and back surfaces, thereby increasing its focusing power.
What is refractive power of lens?The optical power of a lens is the degree to which the lens is able to converge or diverge light.
The optical power of a lens is measured in Diopters, and obtained by taking the reciprocal of the focal length in meters.
P = 1/F
How lens changes its refractive powerA lens can change its refractive power through sharpening of the curvature of its front and back surfaces, thereby increasing its focusing power.
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Auditory receptors detect?
if u answer u get alot points
Answer:
plz mark me brianliest I really want it (puppy eyes) plzzzzzz
Explanation:
Like olfactory cells that detect odors, auditory receptor cells (also called hair cells) are recessed from the surface of the body. ... Sound waves are converted into vibrations in a fluid in the inner ear, and these vibrations indirectly move the hair cells, which then send electrical signals to the brain.
when light bounces off a rough surface, in different directions, what is this called?
A brick is dropped from a height of 31.9 meters
Explanation:
what is asked give brief explanation about question
If the distance around a circular track is 2.0km and if runners run 3 laps, what is the distance travelled?
a) 2 km
b) 0km
c) 3 km
d) 6 km
Answer:
d=6km
Explanation:
because multiply 2x3 is six
Un perro de rescate parte del campamento en búsqueda de una persona extraviada. Se desplaza 3 km al Este, 2.5 km al Norte, 3.5 km al Suroeste y 2 km al Sur, siguiendo la ruta del caminante. ¿A qué distancia y en cuál dirección a partir del campamento se encontraba la persona perdida?
Answer:
2.9 ok ezzzzzzzzzzzzzzzzzzzzzzz
What is the magic triangle used for in science? 10 points
Speed, distance and time can be calculated using a magic triangle. D (the distance) goes in the top of the triangle, S (speed) goes in the bottom left of the triangle and T (time) goes in the bottom right of the triangle.
9 The diagram shows a uniform beam PQ. The length of the beam is 3.0 m and its weight is 50 N. The beam is supported on a pivot 1.0 m from end P. A load of weight W is hung from end P and the beam is in equilibrium. What is the value of W ? A 25 N B 50 N C 75 N D 100 N
equilibrium = 1/1
50 N/x = 1/1
x = 1/1 × 50 N
x = 50 N (B)
#LearnWithEXO
Answer: D 100N
Explanation: Subtract the length of the beam by the pivot and multiply the weight by it.
Sue and Jenny kick a soccer ball at exactly the same time. Sue’s foot exerts a force of 68.9 N to the north. Jenny’s foot exerts a force of 85.4 N to the east.
a) What is the magnitude of the resultant force on the ball?
Answer in units of N.
Explanation:
the magnitude of the resultant force =
√(68.9² + 85.4²)
=√(4,747.21 + 7,293.16)
=√12,040.37
= 109.7 N
»Sue's style feet (north) = 68.9N
»Jenny style feet (East) = 85.4N
So, the resultant force on the ball is
= √(68.9² + 85.4²)
= √(4,747.21 + 7,293.16)
= √(12,040.37)
≈ 109.72N✅
~Physics#2
5. It takes Billy 10 minutes to run 1 mile. What is his speed in miles
per minute?
Answer:
0.1 miles
Explanation:
1mile/10 minutes
to get some miles/1 minute:
since you divided the 10 minutes to get 1 minute you also divide the 1 mile by 10 to get the number of miles per minutes
ei 1/10 = 0.1 miles
Question 1 (Mandatory) (1 point)
An 8 kg basketball is dropped from a height of 10 m. Calculate the Gravitational
Potential Energy of the ball.
0784 Joules
7,683 Joules
80 Joules
O 0.8 Joules
Answer:
[tex]P.E=mgh \\ = 8kg \times 9.81m {s}^{ - 2} \times 10m = 784J[/tex]
I NEED A 100% ACCURATE ANSWER FOR THIS QUESTION ASAP NO LINKS !!!
Answer:
B
Explanation:
A ball is rolling across the floor at a constant speed. What will happen to the ball if it is exposed to an unbalanced force in the same direction that it is moving?
A. It will immediately stop.
B. Its speed will increase.
C. Its speed will decrease.
D. Its motion will be unchanged.
Answer:
B. it's speed will increase
how to measure the density of air
The easiest way to calculate the density of dry air is by applying the ideal gas law. The ideal gas law expresses density as a function of temperature and pressure. Also, just like all gas laws, it is an estimate.
A ship travels north at 15 km/h for 2 h. What is the ship's displacement in km?
The ship travels with a velocity of 15 km/h within 2 hours. The distance travelled is the velocity times the time taken that is 30 km to the north.
What is velocity ?Velocity is a physical quantity measuring the distance travelled by an object per unit time. Velocity is the rate of speed and it is a vector quantity having both magnitude and direction. The unit of velocity can be m/s, km/h, ft/s etc.
Velocity is the ratio of the change in distance to the change in time. The change in distance is sometimes called the displacement.
then velocity = displacement / time
Given that velocity = 15 km/h
time taken = 2 hours
then displacement = velocity × time
= 15 × 2 = 30 Km
Therefore, the displacement of the ship is 30 km to the north.
Find more on velocity:
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Which of the following is true statement about speed?
a) Speed has no magnitude and direction
b) Speed has magnitude but no direction
c) Speed has both magnitude and direction
D) speed has magnitude but no direction
B and D are both the same statement.
It's the correct one.
Calculate the average force a 60.0-kg sprinter exerts backward on the track to accelerate from 2.00 to 8.00 m/s in a distance of 2.50m
Hi there!
Because of Newton's Third Law, the force exerted by the sprinter on the track is equal and opposite to the force exerted by the track on the sprinter.
We can begin by calculating the sprinter's acceleration. Use the equation:
vf² = vi² + 2ad
Rearrange for acceleration:
(vf² - vi²)/2d = a
Plug in values:
(8² - 2²)/2(2.5) = 60/5 = 12 m/s²
Calculate the force:
∑F = ma
∑F = 60 × 12 = 720 N. This is the amount of force exerted by the track on the sprinter in causing him to accelerate forward.
Thus, the backward force exerted by the sprinter on the track is the opposite, or -720 N.
3. A block is pushed with 30N of force this changes the velocity from 20m/s to
30m/s, after 2 seconds. What is the mass?
let's find the acceleration first :
[tex] \boxed{a = \frac{v - u}{t} }[/tex][tex]a = \dfrac{30 - 20}{2} [/tex][tex]a = \dfrac{10}{2} [/tex][tex]a = 5 \: \: ms {}^{ - 2} [/tex]now, we know that :
[tex]f orce= mass \times acceleration[/tex][tex]30 = m \times 5[/tex][tex]m = \dfrac{30}{5} [/tex][tex]m = 6 \: \: kg[/tex]hence, mass = 6kg
help me, please
solve this 4 kilometers = what meters and make sure to show your loops
Answer:
4 km is equal to 4000m
Explanation:
Because 1km is equal to 1000m.
