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Lerok [7]
3 years ago
14

A motor raises the car up the tower from point C to point A with a constant velocity. State Newton’s First Law of Motion and exp

lain how this situation is a demonstration of Newton’s First Law of Motion.
Physics
2 answers:
GarryVolchara [31]3 years ago
8 0

newton 1st law: w no external force, a body will stay at rest or in constant uniform motion.

a motor raises the car up the tower. cuz it moves w/ constant vel, there is no external force: the motor force is the same n in opposity direction as the gravity force on car.



kow [346]3 years ago
6 0

Newton's First Law states that an object will remain at rest or in uniform motion in a straight line unless acted upon by an external force.


Since the car has a constant velocity from point C to point A, there is no external force - the motor force must be equal to the gravity force on the car.


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Explanation:

a_{x} =0 v_{xo}=100 a_{y} =-g  v_{yo}=0

X-direction     | Y-direction

R=x_{o}+ v_{xo} t  | y=y_{o}+v_{yo}t+\frac{1}{2}a_{y}t^2

75=100t         |y=0+0+\frac{1}{2} (9.8)(0.75)

\frac{75}{100} =t             | y=3.675 m

0.75s=t              

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