Answer:
vcannon = 11.42 [m/s]
Explanation:
To solve this problem we must use the principle of conservation of linear momentum which tells us that the momentum of the cannon ball is conserved before and after shooting.
This is at the time of the shot we have two movements, that of the cannon ball moving to the East, while the cannon moves to the left due to the reaction caused by the explosion.
where:
mcannon = mass of the cannon = 700 [kg]
vcannon = velocity of the cannon [m/s]
mcannonball = 20 [kg]
vcannonball = 400 [m/s]
Now replacing:
Answer:
Kinetic energy is 1000 J.
Explanation:
Given:
Mass of the bicycle,
Distance traveled,
Time of travel,
Unknowns:
Speed of the bicycler, .
Kinetic energy of the bicycler.
Equation:
Speed of the bicycler is,
Therefore, the kinetic energy of the bicycler is given as,
Substitute:
Plug in 5 m/s for and 80 kg for . Solve for KE.
Solve:
Therefore, his kinetic energy is 1000 J.
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5lbs in kgs is actually 2.268 kgs
Answer:
The answer to your question is: F = 924 N
Explanation:
Data
v = 28 m/s
m = 66 kg
d = 56 cm
F = ?
Formula
v = d/t
a = v/t
F = ma
Process
t = d/v = 56 / 28 = 2 s
a = v/t = 28 / 2 = 14 m/s²
F = 66 (14) = 924 N