1. An elevator is moving up at a constant velocity of 2.5 m/s, as illustrated in the
1 answer:
You might be interested in
Answer:
Explanation:
Given
mass of book(m)=2.1 kg
height up to which book is lifted is (h)2.2 m
height of person
Potential energy of book relative to ground=mgh
(b)PE w.r.t to person head =mg(h-h0)
work done by person in lifting box 2.2 m w.r.t floor
Word done =Potential Energy of box relative to floor=45.2 J
Answer:
Total distance,
Explanation:
It is given that,
Speed of Aaron from home is y mph and walk back at x mph. Let t is the total time he spend in walking and jogging. Let d is the distance covered.
We he moves from home to destination, time is equal to,
Similarly, when he move back to home, time taken is equal to
Total time taken is equal to :
So, the distance he speed in walking and jogging is . Hence, this is the required solution.