Your answer is.......a car moved 60 km East and 90 km in west.
        
                    
             
        
        
        
 Answer:
The impulse on the object is 60Ns.
Explanation:
Impulse is defined as the product of the force applied on an object and the time at which it acts. It is also the change in the momentum of a body.
F = m a
F = m( )
)
⇒     Ft = m( -
 -  )
)
where: F is the dorce on the object, t is the time at which it acts, m is the mass of the object,  is its initialvelocity and
 is its initialvelocity and  is the final velocity of the object.
 is the final velocity of the object.
Therefore,
 impulse = Ft = m( -
 -  )
)
From the question, m = 3kg,  = 0m/s and
 = 0m/s and  = 20m/s.
 = 20m/s.
So that,
Impulse = 3 (20 - 0)
              = 3(20)
              = 60Ns
The impulse on the object is 60Ns.
 
        
             
        
        
        
Answer:
20 degrees.
Explanation:
From Snell’s law of refraction:
sinθ1•n1 = sinθ2•n2
where θ1 is the incidence angle, θ2 is the refraction angle, n1 is the refraction index of light in medium1, and n2 is the refraction index for virgin olive oil. The incidence angle of the red light is θ1 = 30 degrees.
The red light is in air as medium1, so n1 (air) = 1.00029
So, to find θ2, the refracted angle:
sinθ1•1.00029 = sinθ2•1.464
sin(30)•1.00029 / 1.464 = sinθ2
0.5•1.00029 / 1.464 = sinθ2
sinθ2 = 0.3416291
θ2 = arcsin(0.3416291)
θ2 = 19.976 degrees
To the nearest degree,
θ2 = 20 degrees.
 
        
             
        
        
        
F-free = m*g - F_air = m*a
F_air = 1.2 * m
a= (105 kg * 9.8 m.s^2 - 5*105) / 105 kg
a = 9.3 m/s
Hope this helps
        
             
        
        
        
Look at the rock sitting on the hill in the picture above. Gravity should make the rock slide down the hill. What force is acting to balance gravity,keeping the rock in place? - D. friction
Centripetal force and momentum have to do with movement. Gravity cannot balance gravity.