Answer:
V = 40 m/s^2
Explanation:
horizontal force ,
mass, m = 6kg
time, t = 10s
frictional force, 
net force 
40N - 16N = 6 x a (1)
in this case you apply the equation of motion
the block is at rest, initial velocity is, U = 0
final velocity is is what we are looking for, V
since U is 0 we have
a = V/t (2)
subsituting (2) into (1)
cross multiply
240 = 6 x V
divide both sides by 6
V = 40 m/s^2
A red hot poker in a cold room would cool faster
Answer:
When an object changes speed (increases/decreases) it results in acceleration/de acceleration, its velocity also changes.
Explanation:
Acceleration is the rate of change in velocity.An object can accelerate when speed increases, decreases or direction changes. All these instances involves a change in velocity.Velocity is a vector quantity thus it has magnitude and the direction.Acceleration due to change in direction is centripetal acceleration.The expression for finding acceleration is;
a=change in velocity/change in time
a=Δv/Δt in m/s²
Their all going to the same place your motion is moving
Answer:
0.25A
Explanation:
Given parameters:
Quantity of charge = 30C
Time taken = 2minutes = 2 x 60 = 120seconds
Unknown:
Current through the circuit = ?
Solution:
To find the current through the circuit, use the expression below;
I = 
Q is the quantity of charge
t is the time taken
Now, insert the parameters and solve;
I = 
= 0.25A
