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
faust18 [17]
4 years ago
5

A block of mass 21 kg slides up a frictionless plane inclined at 13◦ with the horizontal under the influence of a force of 210 N

acting parallel to the incline and up the incline. The acceleration of gravity is 9.8 m/s 2 . What is the acceleration of the block? Answer in units of m/s 2 .
Physics
1 answer:
svetlana [45]4 years ago
3 0

Answer:

a= 8.74 m/s²

Explanation:

Given that

m = 21 kg

θ = 13◦

F= 210 N

g= 9.8 m/s²

The force due to gravity

F₁= m g sinθ

F₁=12 x 9.8 x sin 13◦

F₁=26.45 N

Lets take acceleration is a  m/s²

Form Newtons second law

F - F₁ = m a

210 - 26.45 = 21 x a

a= 8.74 m/s²

You might be interested in
If you use a force of 90 N to pick up a 10 pound bag of charcoal, what is the acceleration?
hjlf

Answer:

9ms^2

Explanation:

since ,Force=mass*acceleration

then, acceleration=force/mass

and, Force=90N

Mass=10pound

therefore, acceleration=90/10

=9ms^2

8 0
3 years ago
What is the difference between torque and the moment of a force ​
STatiana [176]

Answer:

Torque Of a Force: If The Force has tendency or Bends The Body about Longitudinal axis of the Body it is Torque. Moment Of a Force :If Force has Tendency to or Rotates the Body about Transverse asis the Body It is Moment .

Explanation:

3 0
3 years ago
A 5 kilograms bowling ball is dropped out a window. It hits the ground, and bounces upward. The velocity change of the ball is n
ioda

Answer:

13.5

Explanation:

Mass: 5kg

Initial Velocity: -15

Final Velocity: 12

Force: 10

We can use the equation: Vf = Vi + at

We need to find acceleration, and we can use the equation, F=ma,

We have mass and the force so it would look like this, 10=5a, and 5 times 2 would equal 10, so acceleration would be 2.

Now we have all the variables to find time.

Back to Vf = Vi + at, plug the numbers in, 12 = -15 + 2(t)

Plugging them in into desmos gives 13.5 for time.

4 0
2 years ago
5th Grade. Please help! SC standards
lesantik [10]
The answer would be D) The tropical convection region because the states below SC are all tropical and the current would go up to SC. I hope this helps.
6 0
3 years ago
A baseball travels at a velocity of 45.3 m/s towards second base for 17 s. Calculate the displacement of the ball.
Sergeu [11.5K]

Answer:

770.1 m

Explanation:

From the question given above, the following data were obtained:

Velocity (v) = 45.3 m/s

Time (t) = 17 s

Displacement (d) =?

Velocity is defined according to the following formula:

Velocity = Displacement /Time

With the above formula, we can obtain the displacement of the ball as follow:

Velocity = Displacement /Time

45.3 = Displacement / 17

Cross multiply

Displacement = 45.3 × 17

Displacement = 770.1 m

Therefore the displacement of the ball is 770.1 m

8 0
3 years ago
Read 2 more answers
Other questions:
  • A physics book slides off a horizontal table top with a speed of 1.10m/s. It strikes the floor after a time of 0.400s. Find the
    14·1 answer
  • Look at the v-t graph a remote-controlled toy car below. At t = 0.0 s, the car is located at +10.0cm. What is the magnitude of t
    6·1 answer
  • What is true for ALL of the examples of electromagnetic waves? A) They all move at the same speed in a vacuum. B) They all have
    14·2 answers
  • The international space station orbits the earth at a distance of 6,783 km from the center of the earth it travels at 7.66 km/s.
    10·1 answer
  • Two Forces Of Magnitude 20N Each Are Acting At 30 And 60 degree with xAxis the Y Component Of The Resultant Force Is
    15·1 answer
  • How much heat would be absorbed by 75.20 g of iron when heated from 22 C to 28 C
    15·2 answers
  • 10) Um viajante, ao desembarcar no aeroporto de Londres, observou que o valor da temperatura do ambiente na escala Fahrenheit é
    14·1 answer
  • Which of the following statements about the force on a charged particle due to a magnetic field are not valid?
    6·1 answer
  • your teacher shows you a cell that contains filaments that can cause the cell to contract,shortening the length of the cell.to w
    10·1 answer
  • Standing 38.6 m away from a rock wall, you yell. How much time in seconds will it take you to hear your echo to two significant
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!