Acceleration is a measure of: A) Rate of change of displacement B) Rate of chang

Question

Acceleration is a measure of: A) Rate of change of displacement B) Rate of change of velocity C) None of the above Which one of the following is not a scalar quantity? A) acceleration B) speed C) time D) mass An object is thrown vertically downward. While it is falling: A) its velocity and acceleration are both upward B) its velocity is upward and its acceleration is downward C) its velocity and acceleration are both downward D) its velocity is downward and its acceleration is upward A falling object hits the ground with zero velocity. A) True B) False C) Not enough information to answer this question. The vertical component of the velocity of a projectile is maximum at its maximum heigh A) True B) False C) Not enough information to answer this question. Define the range, R of a projectile. The vector product of two vector quantities is a; A) Scalar B) Vector C) None of the above To maintain a uniform circular motion, the required centripetal force is: A) Produced by the object in motion itself B) Provided by an external agency C) None of the above

Explanation / Answer

1.1- B (Its rate of change of velocity)

1.2- A (Acceleration is not a scalar its a Vector)

1.3-B As its thrown up, Velocity is up,Acceleration is downward

1.4- False it hits the ground with some non zero velocity

1.5- False , The verticle component is zero at the max heigh

1.6- Range is the horizontal distance travelled by the projectile

1.7-B , Vector prouduct of two vecors is a Vector

1.8- B The required centripetal force is provoded by external source

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