Derive an expression for gravitational potential energy of an object of mass m.
Answers
Answer:
GPE = (2.2 kg)(9.8 m/s2)(50 m) = 1078 J. Example 4: A 2 kg body free falls from rest from a height of 12 m. Determine the work done by the force of gravity and the change in gravitational potential energy. Consider the acceleration due to gravity to be 10 m/s2.
Explanation:
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Read the passage below and answer the question that follows.
Late Thursday evening, Jane was walking home from her friend Audrey’s house when she heard a startling noise. The still of the night was disturbed by the loud sound of trash cans hitting the ground. Anxious, Jane went to investigate the cause. She brought out her pepper spray as she inched closer to the alley. Suddenly, one of the lids clattered to the floor. Startled, Jane jumped back and was about to yell for help when she saw the tail of a black cat disappearing behind the wall. She shook her head and breathed a sigh of relief.
According to the passage above, what does the word anxious mean?
A. timid
B. in a hurry
C. excited
D. nervous
Please select the best answer from the choices provided
A
B
C
D