Acc = (final velocity-initial velocity) / time
acc = ( 22.2m/s - 11.1 m/s) / 2secs
acc = (11.1) / 2
acc = 5.55ms-2
Answer:
195,714,000 meters per second
I hope this helps!
Answer:
The force exerted on a moving charge is 
.
Explanation:
We have,
Charge, 
Magnetic field, 
Velocity of charged particle, 
Angle through the magnetic field, 
It is required to find the force exerted on a moving charge. Due to the motion in charge, magnetic force acts on it. It can be given by :
Plugging all values above
So, force exerted on a moving charge is .
So as two objects are separated from each other, the force of gravitational attraction between them also decreases. ... If the separation distance between any two objects is tripled (increased by a factor of 3), then the force of gravitational attraction is decreased by a factor of 9 (3 raised to the second power).
So the answer you are looking for is B.
Answer:
640 N
Explanation:
Given :
Mass of horse, m = 40kg
initial speed of horse, u = 8 m/s
final speed of horse, v = 0 m/s (because horse comes to a sudden stop)
time taken to stop, t = 0.5 s
recall that acceleration = change in speed / time taken for the change
or
a = (v - u) / t (substituting the above values)
a = (0 - 8) / 0.5
a = -16 m/s² (i.e it is a deceleration of 16 m/s²)
since we are not concerned about the direction of the force, we can simply use the absolute value of acceleration which is a = 16 m/s²
also recall that
Force = mass x acceleration
F = ma (substituting the values above)
F = 40kg x 16 m/s
F = 640 N
