In the diagram below, point A is southwest of point B. Jaleh walks for 400 seconds along path 1, going from point A to point B.
She then runs for 100 seconds from point B back to point A, following path 3. What is Jaleh's velocity for the first part of her trip? (Remember that velocity is calculated using displacement and time.)
A. 0 m/s
B. 0.5 m/s northeast
C. 1.4 m/s southwest
D. 1 m/s northeast
A. 0 m/s
B. 0.5 m/s northeast
C. 1.4 m/s southwest
D. 1 m/s northeast
2 answers:
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Answer:
Explanation:
As we know that the combination is maintained at rest position
So we will take net torque on the system to be ZERO
so we know that
here we will have
so we have
so we have
Answer:
K.E=365.2 J
Explanation:
Given data
Weight w =953 N
radius r=1.68 m
F=73.9 N
t=2.55 s
g=9.8 m/s²
To find
Kinetic Energy K.E
Solution
From the moment of inertia
The angular acceleration is given as
The angular velocity is given as
So the Kinetic Energy is given as