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5. Why must there be a force acting in order for an object to successfully make it around a curved path?

5. Why must there be a force acting in order for an object to successfully make it around a curved path?

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are flung sideways when your car travels around a sharp curve because inertia keeps you moving in a straight line b) there is centrifugal force acting on you c) the car exerts an outward force on you d) of gravity 2. When you observe an object moving in a circle, what can you infer? a) there is a centrifugal force acting on the object b) there is something pushing the object around the circle c) a force towarás the center is acting on the object d) there are no net forces acting on the object 3. The moon is held in its orbit around the earth by O a) gravity b) centrifugal force c) the tides d) the sun 4. Why does a car skid on an icy curve? Because there is Fraction no 5. Why must there be a force acting in order for an object to successfully make it around a curved path? 6. If a car is going around a corner a centripetal force must be acting. How would the force be affected if: fe= C) (주) -나 Fc %3D a) the speed were doubled b) the radius were doubled = C1) ) = = c) both the speed and the radius were doubled d) the speed was tripled () e) the radius was reduced to 1/4 the original F=(1)( 7. Below are a number of situations involving circular motion. In each case, identify the source of the needed to keep the objects in question moving in their circular paths.
Transcribed Image Text:are flung sideways when your car travels around a sharp curve because inertia keeps you moving in a straight line b) there is centrifugal force acting on you c) the car exerts an outward force on you d) of gravity 2. When you observe an object moving in a circle, what can you infer? a) there is a centrifugal force acting on the object b) there is something pushing the object around the circle c) a force towarás the center is acting on the object d) there are no net forces acting on the object 3. The moon is held in its orbit around the earth by O a) gravity b) centrifugal force c) the tides d) the sun 4. Why does a car skid on an icy curve? Because there is Fraction no 5. Why must there be a force acting in order for an object to successfully make it around a curved path? 6. If a car is going around a corner a centripetal force must be acting. How would the force be affected if: fe= C) (주) -나 Fc %3D a) the speed were doubled b) the radius were doubled = C1) ) = = c) both the speed and the radius were doubled d) the speed was tripled () e) the radius was reduced to 1/4 the original F=(1)( 7. Below are a number of situations involving circular motion. In each case, identify the source of the needed to keep the objects in question moving in their circular paths.
Expert Solution
Step 1

Acceleration is defined as the rate of change of velocity. But velocity is a vector quantity. It has both a magnitude and a direction. Hence, acceleration can be the rate of change of magnitude of velocity, the rate of change of direction of velocity or both. 

 

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