Ask question

Ask question

All categories

3 years ago

15

A 0.500-kg block slides up a plane inclined at a 30° angle. If it slides 1.50 m before coming to rest while encountering a frict

ional force of 2 N, find (a) its acceleration, and (b) its initial velocity.

1 answer:

julia-pushkina [17]3 years ago

7 0

B it’s Intail velocity

You might be interested in

Camping equipment weighting 5000N is pulled across a frozen lake by means of a horizontal rope. There is a frictional force of 3

Dmitry [639]

Answer:

The work done by the campers is $4\times10^{5}\ J$

(b) is correct option.

Explanation:

Given that,

Weight = 5000 N

Frictional force = 300 n

Distance = 1000 m

Constant rate of speed = 0.20 m/s²

We need to calculate the force

Using newton's law of motion

$F-F_{\mu}=ma$

$F-300=\dfrac{5000}{10}\times0.20$

$F=\dfrac{5000}{10}\times0.20+300$

$F=400\ N$

We need to calculate the work done

Using formula of work done

$W=F\times d$

Put the value into the formula

$W=400\times1000$

$W=4\times10^{5}\ J$

Hence, The work done by the campers is $4\times10^{5}\ J$

3 0

4 years ago

with what speed does a freely falling object dropped from a height of 88.2m hit the ground? how long does it take for it hit the

Kryger [21]

Answer:

Vf = 41.6 [m/s].

Explanation:

To solve this problem we must use the equations of kinematics.

Vf² = Vo² + (2*g*y)

where:

Vf = final velocity [m/s]

Vo = initial velocity = 0

g = gravity acceleration = 9.81 [m/s²]

y = height = 88.2 [m]

Note: The positive sign of the equation tells us that the acceleration of gravity goes in the direction of motion.

Vf² = Vo² + (2*g*y)

Vf² = 0 + (2*9.81*88.2)

Vf = (1730.48)^0.5

Vf = 41.6 [m/s]

6 0

3 years ago

Metodo medible que no altera la composicion quimica de la materia o cuerpo?

SCORPION-xisa [38]

Answer:

Las propiedades físicas, como la dureza y el punto de ebullición, y los cambios físicos, como la fusión o la congelación, no implican un cambio en la composición de la materia.

Explanation:Creo que es correcta

3 0

3 years ago

3. Suppose that you have an electrically charged stick. If you divide the stick in half, each half will have half the original c

FrozenT [24]

Answer:

No, you can't keep on dividing the charge forever.

Explanation:

No, you can't keep on dividing the charge in that manner forever because the total charge of the stick is an integer multiples of individual units known as an elementary charge, <em>which is the electron (e) charge (e = 1.602x10⁻¹⁹C)</em>.

Therefore the limit of the division of the original charge will be the electron charge since it is the smallest charge that can exist freely.

I hope it helps you!

8 0

3 years ago

An object experiences an acceleration of 6.8m/s2.As a result,it accelerates from rest to 24m/s.How much distance did it travel d

Hitman42 [59]

The distance covered by the object is 42.4 m

Explanation:

The motion of the object is a uniformly accelerated motion (at constant acceleration), therefore we can use the following suvat equation:

$v^2 -u^2 = 2as$

where

v is the final velocity

u is the initial velocity

a is the acceleration

s is the distance covered

For the object in this problem, we have:

u = 0 (it starts from rest)

v = 24 m/s (final velocity)

$a=6.8 m/s^2$

Solving for s, we find the distance travelled by the object:

$s=\frac{v^2-u^2}{2a}=\frac{24^2-0}{2(6.8)}=42.4 m$

Learn more about accelerated motion:

brainly.com/question/9527152

brainly.com/question/11181826

brainly.com/question/2506873

brainly.com/question/2562700

#LearnwithBrainly

8 0

3 years ago