Which of the Following Statements About Acceleration Is True

Acceleration always has the same sign as displacement. E The motion of the object is at a constant speed.

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- Accelerating objects MUST be changing their velocity - An object which is moving at constant speed in a circle has an acceleration.

. On Earth the value is 98 mss the direction is down. A freely falling object has a constant acceleration of 98 ms 2. CIf the average velocity of an object is zero then the average speed of the object must also be zero.

Only statement ii is true because acceleration zero implies that there is no change in speed. Its acceleration is zero. If earth stops rotating the gravitational force will increase since there will be no centrifugal force.

A When v is maximum a is maximum. 1 point Like velocity acceleration has a direction. An object that is accelerating is always changing speed.

Its acceleration in decreasing. If the net force acting upon the object is suddenly reduced to zero then the object would suddenly depart from its circular path and travel tangent to the circle. The acceleration and the net force vector are directed perpendicular to each other.

Acceleration t i m e F i n a l v e l o c i t y I n i t i a l v e l o c i t y Its SI unit is m s 1 s m s 2 A negative acceleration acts opposite to the direction of motion of object and it reduces the velocity it called retardation. B a is perpendicular to the bobs trajectory. Its acceleration is a non-zero constant.

Acceleration always has a positive sign. D Yes if an object is. Instantaneous acceleration is always changing.

B value of a is zero whatever may be the value of v. TRUE - The acceleration of free-falling objects referred to as the acceleration of gravity is independent of mass. Statement iii is false as in circular motion speed is constant but the acceleration is not zero.

If an object is moving at a constant velocity which must be true1 point Its acceleration is increasing. The direction of the acceleration is in the direction opposite to that of the velocity. Inertial forces are proportional to the total acceleration.

An object that is decelerating has a negative acceleration. The total acceleration is the vectorial sum of the tangential and normal accelerations. Simple harmonic motion is defined as the motion of a particle such that.

The velocity must continually change by the same amount each second The acceleration must be constant The velocity must continually change by varying amounts depending on the speed The velocity must be increasing. An object that is accelerating is always changing direction. B the objects speed increases by 98 ms each second.

Thus g decreases in moving away from the centre if rR. B The magnitude of the acceleration of the object is constant. Acceleration is a vector quantity.

D the object travels 98 m each second. - The direction of the acceleration vector is dependent upon two factors. AIf the velocity of an object is zero then the acceleration of an object must also be zero.

Andrewbigbrains5633 is waiting for your help. Up to 256 cash back Which of the following is a true statement about the acceleration of the pendulum bob. This means that a the objects displacement changes by 98 m every second squared.

- Acceleration is a vector quantity. Acceleration is rate of change of the speed with respect to time. Acceleration is causes by change of velocity in either direction or magnitude.

BIf the initial velocity of an object is zero then the initial speed of the object must be zero. Group of answer choices The normal acceleration is always directed toward the center of rotation of the link. The sign of acceleration depends on both the direction of motion and how the velocity is changing.

C the objects acceleration increases by 98 ms 2 each second. Add your answer and earn points. Inside the earth g varies as g R 3GMr.

A No if the speed is constant then the acceleration is equal to zero. Statement i is false because in a projectile motion acceleration is constant but object does not move in straight line. Its displacement x from the equilibrium position is always given by the expression x Asinωt.

Which one of the following statements is true for the speed v and the acceleration a of a particle executing simple harmonic motion. The direction of the acceleration is in the same direction as the displacement. All objects - very massive and less massive - experience this acceleration value.

An object at rest has an instantaneous acceleration of zero. C Yes although the speed is constant the direction of the velocity can be changing. AThe velocity of the object is constant.

Moving away from the center g varies as g r 2GM. Acceleration has unit of displacement over time over time. C When v is zero a is zero.

D When v is maximum a is zero. An object moving with a constant speed may have a centripetal acceleration. D a is tangent to the bobs trajectory.

State whether the following statements are true or false a A falling stone also attracts the earthb The force of gravitation between two objects depends on the nature of medium between themc The value of G on the moon is about one sixth 16 of the value of G on the earthd The acceleration due to gravity acting on a freely ailing body is directly proportional to the mass. Homework Statement If an object moves with constant non-zero acceleration then which of the following statements are true. For an object in uniform circular motion which one of the following statements is false.

Which one of the following statements concerning the objects acceleration is necessarily true. Which of the following statements about acceleration is true. The acceleration of the object is.

B No an object can accelerate only if there is a net force acting on it. The direction the object is moving and whether the object is speeding up or slowing down. The value of the acceleration is positive.

A a is equal to the acceleration due to gravity. An object moving with a constant velocity cannot have a centripetal acceleration. C a is equal to the instantaneous rate of change in velocity.

Remember that for a statement to be true it must be true in all cases. Hence at the center of earth r0 and hence g0. Its displacement x from the equilibrium position is related to its velocity by the expression vωx.

6 Which of the following statements is true about acceleration. Acceleration always has the same sign as velocity.

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