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Ierofanga [76]
3 years ago
15

An object moves in uniform circular motion what is true regarding the force on the object

Physics
2 answers:
MariettaO [177]3 years ago
5 0

Answer:

<u>Circular Motion:</u>

When an object is moving with a uniform circular motion, it has a net acceleration,α  which is directed towards the center of the circle.

Explanation:

<u>An object in a circular motion:</u>

When an object is moving in a circular motion, there speed is uniform across all the points on the circular path. While the change in acceleration is just because of the change in direction during the motion of the object. The force acting on the body is the centripetal force, Fc. As the force,Fc is directed towards the center of the circle and the different points on which the objects are present during the whole duration of motion is tangent to the center of the circle.

PtichkaEL [24]3 years ago
4 0
The force on the object has a constant strength, but its direction
keeps changing.  The force is always directed from the object to
the center of the circle.  It's called "centripetal force".
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A 1000.0 kg truck accelerates from 20.0 m/s to 25.0 m/s over a distance of 300.0 m. What is the average net force on the truck?
choli [55]

Answer:

The average net force on the truck is 375 Newtons.

Explanation:

Using Newton's 3rd equation of motion, we have :

v^{2} - u^{2} = 2×a×s

where, v = final velocity = 25 m/s

u = initial velocity = 20 m/s

a = acceleration

s = distance traveled = 300 m

Using these values in the above equation, we get acceleration = 0.375 m/s^{2}

Using Newton's second law, we have:

F=m×a

where m = mass = 1000 kg

a= acceleration = 0.375 m/s^{2}

Putting values we have F=375 N

3 0
3 years ago
1. Determine the image distance in each of the following.
miskamm [114]

It is given that for the convex lens,

Case 1.

u=−40cm

f=+15cm

Using lens formula

v

1

−

u

1

=

f

1

v

1

−

40

1

=

15

1

v

1

=

15

1

−

40

1

v=+24.3cm

The image in formed in this case at a distance of 24.3cm in left of lens.

Case 2.

A point source is placed in between the lens and the mirror at a distance of 40 cm from the lens i.e. the source is placed at the focus of mirror, then the rays after reflection becomes parallel for the lens such that

u=∞

f=15cm

Now, using mirror’s formula

v

1

+

u

1

=

f

1

v

1

+

∞

1

=

15

1

v=+15cm

The image is formed at a distance of 15cm in left of mirror

6 0
3 years ago
an astronaut drops a hammer and an egg while standing on the surface of the moon. which one will the surface first?
elena-s [515]
The two will fall at the same speed and reach the surface at the same time. This is because the two will experience the same gravitational acceleration on the moon. However, on the earth surface the two will land on the surface of the earth at the same time due to air resistance such that the egg will experience a higher air resistance than the hammer. On, the moon, where there is no noticeable atmosphere there is no air resistance on either object and both fall at the same speed. It is also important to note that their mass doesn't affect their speed.
7 0
3 years ago
Read 2 more answers
. Light travels at a speed of about 300 000 km/s. a. Express this value in scientific notation. b. Convert this value to meters
olganol [36]

Answer:

The answer to your question is below

Explanation:

Data

light speed = 300 000 km/s

a) Express it in scientific notation

to do it, we just move the decimal point 5 places to the left

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b) Convert this value to meters per hour

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c) What distance in centimeters does light travel in 1 s?

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v = 300 000 km/s

d = ?

t = 1 s

 formula   v = d/t      we clear distance     d = vxt

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                                   d = 300000000 m = 30000000000 cm

4 0
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gtnhenbr [62]
45 N/m as attached, please comment

5 0
2 years ago
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