<span>The force acting on the ball is the same than the ball acts on the floor at the moment of hitting but in the reverse direction. So the ball produces a force downwards and the floor makes the same force in value but upwards.
Then the value of the force that impulses the ball upward is: F = m * a
where F is force or impulse, m is mass of the ball and a is acceleration (9.8 m/s2)
F = 1.2 kg * 9.8 m/s2 = 11.76 kg*m/s2 = 11.76 Newtons (upwards)</span>
Given that 2 m is to .10N
we will set up a ratio & proportion
.10 x
— —
2 1
cross multiply
2x = .10(1)
divide both sides by 2
x (and the answer) = .05 N
Answer:
The value of speed of wooden block at the instant after the collision 
262.41 
Explanation:
Given data
Mass of block = 6.3 kg
Mass of bullet = 0.086 kg
Velocity of bullet 
= 266
Final velocity of whole system is
Put all the values in above formula we get
262.41
This is the value of speed of wooden block at the instant after the collision.
Answer:
63.78%
Explanation:
The equation that relates the angle of the polarization and the intensity of ligth transmitted is I=Io*cos²(x), where I is the intensity of the incident light, Io is the intensity of the transmitted light, and x is the angle of polarization. The fraction of incident light will be I/Io, so the answer in given by cos²(37) = 0.6378
I think its b but not sure
