1. (Show work) A 120.0 lb person stands in an elevator. If the elevator is slowing...
1. (Show work) A 120.0 lb person stands in an elevator. If the elevator is slowing while moving downwards the force that the floor exerts on the person is:
a) less than 120.0 lbs
b) more than 120.0 lbs
c) 120.0 lbs
2. A ball is thrown upwards into the air with an initial velocity of 10.0 m/s at 60.0 degrees to the horizontal. Assuming it reaches a maximum height then falls back down to the ground, what is its minimum speed while still in the air? Show work
a) 0 m/s
b) 5.00 m/s
c) 7.07 m/s
d) 10.0 m/s
d) not enough information
3. A car can take a turn of radius 30.0 m with a speed of 20.0 m/s without skidding. At what speed can it take a turn of radius 60.0 m without skidding? Show work
a) 10.0 m/s
b) 14.0 m/s
c) 28.0 m/s
d) 40.0 m/s
e) 80.0 m/s
Homework Answers
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1. (Show work) A 120.0 lb person stands in an elevator. If the
elevator is slowing...
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Show work
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Plzzzz answer and show all work for the questions below.
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A hotel elevator ascends 200 m
with a maximum speed of 5.0 m/s. Its acceleration and deceleration
both have a magnitude of 1.0 m/s2. How far does the
elevator move while accelerating to full speed from rest? how long
does it take to make the complete trip from bottom to top?
2. MP HW P2.58 (Refer to example 2.10, p.47) A hotel elevator ascends 200m with maximum speed of 5m/s. Its acceleration and deceleration both have a magnitude of 1.0m/s...
Please show and explain work.
A driver is turning around a curve of radius 300 in on Hat ground. The 1500 kg car is trawling a constant speed of 30 m/s. What is the magnitude and direction of the force causing the car to move in a circular path? What type of force is this? (Normal, friction, tension, etc...) If the static friction coefficient is 0.7, how fast could the car take the turn without slipping or deviating from the...
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7.10. Please answer all the
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