1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
pickupchik [31]
3 years ago
5

A force is applied to a block to move it up a 30° incline. The incline is frictionless, the block is initially at rest, F= 65.0

N and M=5.00 kg. If the block starts from rest, how far will it move in 0.550 s? Also, indicate whether the block moves up or down the incline.
Physics
1 answer:
muminat3 years ago
7 0

Answer:

0.96 m, upward

Explanation:

\theta=30^{\circ}

F=65 N

M=5 kg

Initial velocity, u=0

t=0.550 s

Fcos\theta-Mgsin\theta=Ma

Where g=9.8 m/s^2

Substitute the values

65cos30-5\times 9.8sin30=5a

31.8=5a

a=\frac{31.8}{5}=6.36 m/s^2

S=ut+\frac{1}{2}at^2

S=0+\frac{1}{2}(6.36)(0.55)^2=0.96 m

Hence,the block moves upward because displacement is positive.

You might be interested in
in order to generate electricity, nuclear powerplants take advantage of this part of the electromagnetic spectrum
antiseptic1488 [7]
Bit of an odd question. Power Plants are known to use water-powered turbines to generate electricity, but can also make use of nuclear fission.
8 0
3 years ago
Overcoming an object inertia always requires an
Zinaida [17]
Opposite force in the opposite.
3 0
3 years ago
An electric motor rotating a workshop grinding wheel at a rate of 151 rev/min is switched off. Assume constant angular decelerat
tamaranim1 [39]

Answer:

Explanation:

Initial angular velocity ω₀ = 151 x 2π / 60

= 15.8  rad /s

final velocity = 0

Angular deceleration α = 2.23 rad / s

ω² = ω₀² -  2 α θ

0 = 15.8² - 2 x 2.23 θ

= 55.99  rad

one revolution = 2π radian

55.99 radian = 55.99  / 2 π no of terns

= 9 approx .

8 0
3 years ago
Please answer the question below
scoundrel [369]
The correct answer is B.
In a velocity vs time graph, a line going up means an increase in velocity, or speed, which correlates to positive acceleration. Negative acceleration means slowing down.
6 0
3 years ago
10points asap <br><br> A force of 30 N acts upon a 7 kg block. Calculate its acceleration.
nekit [7.7K]
Hello! Assuming that the only force acting on the mass is 30N...

Fnet = 30N
Fnet = ma (mass x acceleration)
ma = 30N
a = 30N / m
a = 30N / 7kg
a = 4.2857 m/s^2
a = 4 m/s^2

I hope this helps!
5 0
3 years ago
Other questions:
  • The temperature of a lead fishing weight rises from 26∘c to 38∘c as it absorbs 11.3 j of heat. what is the mass of the fishing w
    15·1 answer
  • The bird at right watches the waves. If the portion of a wave between two crests passes the pole each second. Wavelength is 1m.
    7·1 answer
  • A car traveling south is 200 kilometers from its starting point after 2 hours. What is the average velocity of the car?
    7·2 answers
  • __________ is the total kinetic energy of all atoms in a substance while temperature is a measure of the average kinetic energy
    12·1 answer
  • In a perfectly inelastic one-dimensional collision between two objects, what condition alone is necessary so that the final kine
    14·2 answers
  • A student connects four AA batteries (1.5 V each) in series to light up a light bulb. The circuit has a resistance of 50 Ω. How
    14·2 answers
  • When kicking a football, the kicker rotates his leg about the hip joint. If the velocity of the tip of the kicker’s shoe is 35.0
    11·1 answer
  • 2 coplas o pregones inventadas por ti relacionadas con la región caribe.
    14·1 answer
  • When you think of the word "respiration," you might think about the process of breathing, which is actually called ventilation.
    11·1 answer
  • Lamp power with what is the current through the lamp when it is connected to a battery ?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!