Answer:
Impulse = 1000 Ns
Explanation:
Given the following data;
Force of collision = 1000 kg•m/s. 
Time = 1 seconds
To find the impulse;
Mathematically, the impulse experienced by an object or body is given by the formula;
Impulse = force * time
Substituting into the formula, we have;
Impulse = 1000 * 1
Impulse = 1000 Ns
 
        
             
        
        
        
Answer:0.0704 kg
Explanation:
Given
initial Absolute pressure =210+101.325=311.325
=210+101.325=311.325



as the volume remains constant therefore 



therefore Gauge pressure is 337.44-101.325=236.117 KPa
Initial mass 

Final mass 

Therefore  =0.91-0.839=0.0704 kg of air needs to be removed to get initial pressure back
=0.91-0.839=0.0704 kg of air needs to be removed to get initial pressure back