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vaieri [72.5K]
3 years ago
13

HELP ASAP PLEASE!!! A car starting from rest, accelerates constantly at 8m/s2 for 6s. How far did it travel during this time per

iod?
Physics
2 answers:
insens350 [35]3 years ago
7 0

Answer:

Explanation:

initial velocity(u) = 0 since it is starting from rest

acceleration(a) = 8m/s^2

time(t) = 6s

distance(s) = ?

s = ut + 1/2 at^2

s = 0 × 6 + 1/2 × 8 × (6)^2

s = 0 + 1/2 × 8 × 36

s = 0 + 144

s = 144 m

hope this helps

plz mark it as brainliest!!!!!!

nikdorinn [45]3 years ago
4 0
Using the equation a= d/t
Where a is acceleration, d is distance and t is time.
The answer is 48m

Explanation
A=d/t
8=?/6
You times both sides by 6
And get
8x6=?
And thus the answer is 48
And when u put in the units it’s
48 meters

Hope this helps !!
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A meter stick is held vertically with one end on the floor and is then allowed to fall. Find the speed of the other end when it
Tems11 [23]

Answer:

5.4 ms⁻¹

Explanation:

Here we have to use conservation of energy. Initially when the stick is held vertical, its center of mass is at some height above the ground, hence the stick has some gravitational potential energy. As the stick is allowed to fall, its rotates about one. gravitational potential energy of the stick gets converted into rotational kinetic energy.

L = length of the meter stick = 1 m

m = mass of the meter stick

w = angular speed of the meter stick as it hits the floor

v = speed of the other end of the stick

we know that, linear speed and angular speed are related as

v = r w\\w = \frac{v}{r}

h = height of center of mass of meter stick above the floor = \frac{L}{2} = \frac{1}{2} = 0.5 m

I = Moment of inertia of the stick about one end

For a stick, momentof inertia about one end has the formula as

I = \frac{mL^{2} }{3}

Using conservation of energy

Rotational kinetic energy of the stick = gravitational potential energy

(0.5) I w^{2} = mgh\\(0.5)(\frac{mL^{2} }{3}) (\frac{v}{L} )^{2} = mgh\\(0.5)(\frac{v^{2} }{3}) = gh\\(0.5)(\frac{v^{2} }{3}) = (9.8)(0.5)\\v = 5.4 ms^{-1}

7 0
3 years ago
The benefits of jumping rope include: (which of these things)
Svetach [21]

Answer:

E.  All of the Above

Explanation:

By doing any kind of exercise or physical activity, you are increasing your overall health.  Your muscle strengthen because of the jumping and movement of arms.  You are more alert because you have to time each jump right in order to keep going.  By breathing evenly while jumping, you do help your Cardiorespiratory fitness as well.  And of course, you increase your athletic ablility over all with much endurance and practice.

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2 years ago
What are the body parts to this figure? Any of the body parts. (Please)
vlabodo [156]
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3 years ago
What's the difference between a direct relationship and a positive one?
borishaifa [10]
A positive or direct relationship is one in which the two variables (we will generally call them x and y) move together, that is, they either increase or decrease together. In a negative or indirect relationship, the two variables move in opposite directions, that is, as one increases, the other descremases
5 0
2 years ago
A swing has a period of 10 seconds. What is its frequency ?
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3 years ago
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