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Neko [114]
3 years ago
7

If it were possible to remove gravity and friction, think about what would happen to a football if it were tossed into the air.

Which statement best describes the force(s) acting on the football? A force must be applied to it when it slows to a position of rest. A force must be applied to it before it slows to a position of rest. No force is needed; an object in motion stays in motion. Many forces must act upon it to keep it in motion.
Physics
2 answers:
elena-14-01-66 [18.8K]3 years ago
6 0
Ignoring fluid resistance, football will <span>maintain a constant speed until other forces accelerate the football.</span>
Naily [24]3 years ago
6 0

Answer:

No force is needed; an object in motion stays in motion.

Explanation:

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A 790N person runs up a flight of 40 stairs (.25m for each step) in 20 seconds, and then down 10 steps in 5 seconds. How much to
Romashka [77]

A person runs up 40 stairs and then come down 10 steps

So total stairs upwards is given as

N = 40 - 10 = 30

now here we will have total height reached

H = N\times h

H = 30 \times 0.25 = 7.5 m

Now total energy used or mechanical work done is

W = mgH

W = 790 \times 7.5 = 5925 J

Now the mechanical power is given as

P = \frac{W}{t}

P = \frac{5925}{20+ 5} = 237 W

7 0
3 years ago
What are the difference between convergent, divergent, and transform?
pashok25 [27]
When two plates come together, it is known as a convergent boundary.Magma from the mantle solidifies into basalt, a dark, dense rock that underlies the ocean floor. Thus at divergent boundaries, oceanic crust, made of basalt, is created. Two plates sliding past each other forms a transform plate boundary.
7 0
4 years ago
What is the kinetic energy of a vehicle that has a mass of 3,500 kg and is moving at 40 m/s
stiv31 [10]

Answer:2800000j

Explanation:

For us to know the kinetic energy of the vehicle,

Where m is the mass

And v is the velocity

Then, K.E=1/2mv^2

While, K.E=1/2×3500×40^2

Therefore, our answer will now be

K.E=2800000j

5 0
3 years ago
Must physics always be explained by math?
cluponka [151]

Answer:

Because Physics is mainly composited of math

Explanation:

If you really think about it the only way any science works is off maths, whether that be measuring the amount of NaOH to put into a solution or determening the amount of sugar you want in a cake it all relys on maths

5 0
3 years ago
Please help I’m a big stupid idiot head
Stells [14]

Answer:

Explanation:

ur right i think

8 0
3 years ago
Read 2 more answers
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