Answer:
Mg= 1.3418 kg*m/s
Explanation:
Mass of rifle
Recoil velocity of rifle
Momentum of rifle
mass of bullet
mb=7.2x10^{-3} kg=0.0072 kg
velocity of bullet relative to muzzel
v_{b} = 601 m/s
velocity of bullet relative to earth= 601 - 1.95=599.05 m/s
momentum of bullet
the momentum of the propellant gases = momentum of rifle - momentum of bullet
the momentum of the propellant gases
Mg=5.655 -4.3132
Mg= 1.3418 kg*m/s
the momentum of the propellant gases in a coordinate system attached to the earth as they leave the muzzle of the rifle is 1.3418 kgm/s
The solution would be like
this for this specific problem:
Work = 50kg * 1.5m
= 75
Work = 55kg * 1 m
=55
75 > 55
Therefore, the statement that is true is “Herb lifting 50 kg 1.5 meters does
more work than Foley lifting 55 kg 1 meter.”
Answer:
T = 2.82 seconds.
The frequency 
Amplitude A = 25.5 cm
The maximum speed of the glider is 
Explanation:
Given that:
the time taken for 11 oscillations is 31 seconds ;
SO, the time taken for one oscillation is :
T = 2.82 seconds.
The formula for calculating frequency can be expressed as :
The amplitude is determined by using the formula:
The limits that the spring makes the oscillations are from 10 cm to 61 cm.
The distance of the glider is, d = (61 - 10 )cm = 51 cm
Replacing 51 for d in the above equation
A = 25.5 cm
The maximum speed of the glider is:
where ;
