Answer: 12 J
Explanation:
Work = force*displacement
Work= 3N*4m= 12 Joule
1 w = 1N/s the change in total energy =mgh = 600*4 = 2400N. 2400N/200N/s = 12seconds
The sun is facing a certain side of the earth
Answer:
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<u>Muzzle velocity 300 m/s</u> corresponds to the .38 special
Thus, the shooter is Janice Jackson with .38 special.
Refer to the diagram shown below.
The force, F, is applied at 5 cm from the elbow.
For dynamic equilibrium, the sum of moments about the elbow is zero.
Take moments about the elbow.
(5 cm)*(F N) - (30 cm)*(250 N) = 0
F = (30*250)/5 = 1500 N
Answer: 1500 N