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]
3 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]3 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
The photo shows a pencil in water. As light passes from water into glass, it changes direction causing you to see a distorted vi
masha68 [24]
The answer is C. <span>Light travels at different speeds in water and in glass.</span>
7 0
3 years ago
During a 980. miles cruise, a ship travelled 590 miles in 7 hours first. Then the ship changed its speed for the rest of the tri
vfiekz [6]

Explanation:

The average speed of a modern cruise ship is roughly 20 knots (23 miles per hour), with maximum speeds reaching about 30 knots (34.5 miles per hour).

7 0
3 years ago
Read 2 more answers
Which chemical equation correctly shows the formation of water from hydrogen
nekit [7.7K]

Answer:

d. H + O2 ------ H2O

that's the formation of water

6 0
3 years ago
Read 2 more answers
Can you tell from the coefficient of restitution whether a collision has added kinetic energy to a system, taken some away, or l
Maurinko [17]
For an inelastic collision where coefficient of restitution,e, is equal to 0, the momentum is conserved but not the kinetic energy. So, there is addition or elimination of kinetic energy.

On the otherhand, when e = 1, like for an elastic collision, kinetic energy and momentum is conserved. Thus, the system's kinetic energy is unchanged.
6 0
3 years ago
.
beks73 [17]

Answer:

2 m/s²

Explanation:

the equations of motion are

S= ut +½at²

v² = u²+ 2as

v = u + at

s = (u+v)/2 × t

From the parameters given

u = 0m/s this is because it starts from rest

Distance (s)  = 9m

Time (t)  = 3s

Based on this the first equation would be used

s = ut + ½at²

Input values

9 = 0×3 + ½ × a x 3²

9 = 0 + 9a/2

9 = 4.5a

Divide both sides by 4.5

a = 9 / 4.5 m/s²

a = 2 m/s²

I hope this was helpful, please mark as brainliest

3 0
3 years ago
Other questions:
  • A school bus has a mass (including the driver and passengers) of 1.64 times 10^4 kg and is driving north at a speed of 15.2 km/h
    13·1 answer
  • Is there life on other planets ?
    5·2 answers
  • The half life of radium 222 is 38 seconds if you had a 12 gram sample how much would be left after 72 seconds
    9·1 answer
  • Why do we dream? hurry plz
    6·2 answers
  • Which of the following is a field force
    5·1 answer
  • A 70.9-kg boy and a 43.2-kg girl, both wearing skates face each other at rest on a skating rink. The boy pushes the girl, sendin
    5·1 answer
  • Drop interesting and usefuk facts down here plesse and i'll give the most interesting one brainliest
    7·1 answer
  • NEED IT ASAP!!!!!!!!!!!!!!!!!!!!!
    15·1 answer
  • According to Coulomb's law, if the separation between two particles of the same charge increases four times, the potential energ
    9·1 answer
  • If two cells out of n number of cells each of internal resistance ’r’ are wrongly connected in series, then total resistance of
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!