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skad [1K]
1 year ago
6

A particle starts from rest and is acted on by a net force that does work at a rate that is proportional to the time t. The spee

d of the particle is proportional to:.
Physics
1 answer:
vova2212 [387]1 year ago
8 0

The speed of the particle is proportional to = √t

Work = the change in kinetic energy = 1/2 mv2

If work is proportional to time

W = t

1/2 mv2 = t

v2 = t

v (speed) = √t

Speed is the time rate at which an object is shifting along a path, even as speed is the fee and route of an item's movement. Positioned every other manner, speed is a scalar value, even as pace is a vector.

Velocity (or price, r) is a scalar quantity that measures the gap traveled (d) over the alternate in time (Δt), represented via the equation r = d/Δt.

The Italian physicist Galileo Galilei is credited with being the first to measure speed by considering the gap blanketed and the time it takes. Galileo described pace as the gap covered in line with unit of time.

Learn more about speed here:- brainly.com/question/13943409

#SPJ4

You might be interested in
A 0.50-kg object moves in a horizontal circular track with a radius of 2.5 m. An external forceof 3.0 N, always tangent to the t
kodGreya [7K]

The work done by the force is 47.1 J

Explanation:

The work done by a force in moving an object is given by

W=Fd cos \theta (1)

where

F is the magnitude of the force

d is the distance covered by the object

\theta is the angle between the direction of the force and the motion of the object

In this problem, the force applied to the object is

F = 3.0 N

This force is always tangential to the track: this means that at every instant, the force is parallel to the motion of the object, so

\theta=0

And the distance covered is equal to the circumference of the circle, which is:

d=2\pi r=2\pi (2.5 m)=15.7 m

where r = 2.5 m is the radius.

Now we can substitute into eq.(1) to find the work done:

W=(3.0)(15.7)(cos 0)=47.1 J

Learn more about work:

brainly.com/question/6763771

brainly.com/question/6443626

#LearnwithBrainly

4 0
3 years ago
If a car speeds up and pushes back on the road, what does the road do to the car?
Basile [38]

Answer:

make it go faster

Explanation:

because of the arrow danmaicts of the force the wind give more speed

6 0
3 years ago
What are three kinds of forces that affect an object’s motion? What effects do these forces have?
Harman [31]

Answer:

Different forces (including magnetism, gravity, and friction) can affect motion

4 0
2 years ago
Help me please!! 15points
Romashka-Z-Leto [24]

Explanation:

Acceleration is the change in speed over change in time.

a = Δv / Δt

a. The car's acceleration is:

a = (80 km/h − 0 km/h) / 10 s

a = 8 km/h/s

So every second, the speed increases by 8 km/h.

b. The cyclist's acceleration is:

a = (16 m/s − 4.0 m/s) / 5.6 s

a = 2.1 m/s²

c. The stone's speed is:

10.0 m/s² = (v − 0 m/s) / 3.5 s

v = 35 m/s

d. The time is:

1.6 m/s² = (10 m/s − 0 m/s) / t

t = 6.3 s

4 0
3 years ago
Which BMI standard for teens is considered under weight?
Lena [83]
First let’s pick one at random

Less than 5 percentile

That means they lined 100 kids up and less than 5% of them are that certain weight.

So if you apply this to every option you will see the answer is
A). Less than 5 percentile
3 0
3 years ago
Read 2 more answers
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