Question

e. State which of the following situations are possible and give an example of each of these:

(1) A body moving with constant acceleration but with zero velocity.

(2) A body moving horizontally with acceleration in vertical direction.

(3) A body moving with a constant speed in an accelerated motion.​

Answer 1

(1) A body moving with constant acceleration but with zero velocity.

Answer:

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Answer 2

Answer:

1)an object moves with acceleration and constant speed in a uniform circular motion

example=One example of this is the vertical motion of an object. When the object is thrown upwards and reaches the maximum height, the velocity of the body becomes zero, but it still accelerates with constant acceleration

2) A body moving horizontally with an acceleration in vertical direction is possible in a projectile motion

example=e.g. in a circular motion if one is moving with a constant speed, the motion is still said to be accelerated motion as the direction of velocity changes at every point of the path.

3)The body moving in a circular motion moving with constant speed is an accelerated motion because even though the speed is constant, the direction of motion keeps on changing constantly

example=since velocity is a vector that has both magnitude and direction, a change in either the magnitude or the direction constitutes a change in the velocity