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
Natalija [7]
4 years ago
7

what is the force if a block of wood with mass 20 kg slides along a frictionless surface at 2 m/s squared

Physics
1 answer:
CaHeK987 [17]4 years ago
5 0

Answer:

40 N

Explanation:

F=ma where F is the applied force, m is the mass of object and a is the acceleration.

Since there is no friction, substituting 20 Kg for m and 2 m/s squared for a then we obtain

F=20*2=40 N

You might be interested in
Which terrestrial planet experiences the shortest year?
Masteriza [31]

Being the planet closest to the sun, Mercury must be the one
with the shortest year.  That's how gravity works.

8 0
3 years ago
Drag the tiles to the boxes to form correct pairs. The table shows the distances between a star and three celestial objects. Use
aliina [53]

Answer:

Explanations :

4 1
3 years ago
For the chemical reaction C2H6 --> C2H4 + H2 + 137kJ, the chemical energy of the A. reactant and the chemical energy of the p
Goryan [66]

Answer: The chemical energy of reactants is greater than the chemical energy of products.

Explanation: In the given reaction

C_2H_6\rightarrow C_2H_4 + H_2 +137 kJ

It can be seen that the energy has been released. Thus we can say that reactants have converted to products by release of energy. Thus energy of products is less as compared to energy of reactants as some of the energy has been released.


4 0
3 years ago
Read 2 more answers
I'm very confused. Thanks for whoever helps me :)
sergij07 [2.7K]
(C). Remember gravity provides an acceleration of 9.81m/s^2, so the y component of velocity initial is zero because it isn’t already falling, and we have the height, so basically we use the kinematic equation vf^2=vi^2+2ad, substitute given values and you get vf^2=2(9.81)(65) which is 1275, when you take the square root you get 35.7m/s for final velocity
(B). Then you use vf=vi+at to get the equation 35.7=(9.81)t, when you divide out you get 3.64s for time t
(A). Finally, since we assume that there is no acceleration or deceleration horizonatally, we just multiply the time taken for it to hit the ground and the initial speed ((3.64)(35.7)) to get 129.96, with significant figures I would round that to 130 metres.
**this is in the order that I felt was easiest to answer**
6 0
3 years ago
Which transformation will map figure L onto figure L'? (1 point) Two congruent triangles Figure L and Figure L prime are drawn o
Ghella [55]

Answer:

Horizontal translation of six units

Explanation:

8 0
3 years ago
Other questions:
  • Which of the following best explains why mutations cannot cause evolution?
    13·1 answer
  • An object is moving back and forth on the x-axis according to the equation x(t) = 3sin(20πt), t> 0, where x(t) is measured in
    5·1 answer
  • When does light refract?
    11·1 answer
  • If two objects of unequal mass collide, both objects will continue to move in the direction ofL A. the smaller object's momentum
    12·2 answers
  • A pesky rabbit has been feeding on Mrs. Cromwell’s prized flowers. In order to put an end to this she devised the simple trap be
    5·1 answer
  • An aircraft with the mass of 300000kg is flying at an altitude of 2000m with a speed of 100m/s
    9·2 answers
  • Kinematics Question Please Help.
    5·1 answer
  • An athlete runs 600 m in 2 minutes and the next 1000 m in 1 minute on the same straight
    9·1 answer
  • Newton's first law of motion gives the concept of force moment ​
    11·1 answer
  • Particulate Motion Unit Test
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!