Answer:
Explanation:
Given
weight of block 
A force is of
is applied on the block
As 1 N is less than weight of block so block exert Force less than its weight


So Block exert a force of 2 N downward on floor
Answer:
Option D. 4.4 m/s²
Explanation:
The following data were obtained from the question:
Velocity (v) = 21 m/s
Radius (r) = 100 m
Centripetal acceleration (a) =.?
The centripetal acceleration of the car can be obtained as follow:
Centripetal acceleration (a) = Velocity square (v²) / radius (r)
a = v²/r
a = 21²/100
a = 441/100
a = 4.41 ≈ 4.4 m/s²
Therefore, the centripetal acceleration of the car is 4.4 m/s².
Answer:
acceleration = 22.14 m/s²
time = 2.80 s
Explanation:
given data
initial velocity = 31.0
final velocity =
time = 1.40
solution
we get here acceleration that is
acceleration =
...............1
acceleration =
acceleration = 22.14 m/s²
and
by kinematic equation of motion
v = u +at .........2
t =
time = 2.80 s
AnswerIt is continuously falling towards the surface of the earth
Explanation:
since gravity from earth is the thing that keeps it constantly in orbit
It is because the weight is equal to each other and balances out. example war ships have tons of metal, but it spreads the weight on the water