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4 years ago

Why did friction make it difficult to discover newtons first law of motion

2 answers:

7 0

Friction made it difficult because an object in motion may not always stay in motion due to the friction caused by its movement. For instance, if you roll a ball down a straight platform, it will not go on forever. The friction of the platform and the ball with eventually slow it down and stop it.

Hope this helps!!

V125BC [204]4 years ago

6 0

Because Static Friction and Inertia can be confused, because mass defines how much inertia a body has, that is, the difficulty of putting some acceleration in it. And it's basically the same with friction. Static friction says that, for example, for you to pull a table with your hands, you need to put force (obviously), as measured by Newtons. From the Newton that the table start to accelerate, then there is the static friction.

For example:

To speed up the table, you put five Newtons, and the table does not move. Put ten, still not moving. It puts 11, and it begins to move (accelerate). So the static friction force is 10 Newtons.

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For this quiz, we shall return to the radio control car track that we visited briefly on the last quiz. The track is 10 meters l

Iteru [2.4K]

Answer:

$v=1.54\,\,metres\,\,per\,\,second$

Explanation:

The given equation is $x=x_0+vt$ where $x_0$ denotes initial time in the stopwatch and $x$ denotes the distance covered by car.

As the judge starts her watch at the instant the car passes the 2.0 meter mark $(x_0=2)$ and the judge reads 3.9 seconds on her stopwatch when the car passes the 8.0 meter mark.

Put $x_0=2,\,,\,x=8\,,\,t=3.9$ in equation $x=x_0+vt$

$8=2+3.9t\\8-2=3.9t\\6=3.9v\\v=\frac{6}{3.9}\\ v=1.54\,\,metres\,\,per\,\,second$

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3 years ago

If a projectile travels in the air for 8 seconds when does a projectile reach its highest point

emmainna [20.7K]

Given

The projectile is in air for a time of t=8 sec

To find

The time it takes to reach the highest point

Explanation

A projectile moves up to the highest point and then again moves down following a parabolic path.

So it will reach the highest point at a time half the time it requires to follow teh parabolic path.

The time taken to reach the highest point is 4 sec

Conclusion

The time taken is 4 sec.

5 0

2 years ago

You are standing in an elevator that is accelerating upward. The magnitude

brilliants [131]

Answer:

All for da gang

The net force on you changes from zero to downward as the elevator begins accelerating.

Explanation:

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2 years ago

1. A stone is thrown upwards with an initial velocity of 25 m/s at angle of 30° to the ground a. Show that the vertical componen

Lana71 [14]

Answer:

sin 30° = $\frac{v_{y} }{25}$

Multiply each side by 25 to cancel the 25 under $v_{y}$

(25)· sin 30° = $v_{y}$

Multiply everything on the left side.

12.5 $\frac{m}{s}$ = vertical velocity component.

I attached a picture, I hope it helps.

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3 years ago

20. The goal of cognitive-behavioral therapy is BEST described as: A.improving the client's interactions with others. B.helping

Andre45 [30]

The goal of cognitive-behavioral therapy is BEST described as modifying the client's negative behavior and dysfunctional ways of thinking

What is cognitive-behavioral therapy ?

Talk therapy often used today is cognitive behavioural therapy (CBT) (psychotherapy). You engage in scheduled therapy sessions with a mental health professional (psychotherapist or therapist). To view difficult events more clearly and respond to them more effectively, CBT teaches you to become aware of false or negative thinking.

In order to assist people identify their most important goals and get through roadblocks, cognitive behavioral therapy (CBT) uses a time-sensitive, structured, present-oriented approach. The cognitive model, on which CBT is based, states that people's perceptions of situations have a stronger influence over their responses than the actual circumstances.

To know more about cognitive behavioral therapy use link below:

brainly.com/question/7773389

#SPJ1

7 0

1 year ago