Get Updates
Subscribe to receive instant notifications for new study materials and important updates.
State which of the following situations are possible and give ... - Science
State which of the following situations are possible and give an example for each of these:
(a) an object with a constant acceleration but with zero velocity
(b) an object moving with an acceleration but with uniform speed
(c) an object moving in a certain direction with an acceleration in the perpendicular direction.
(a) Possible
Example: When a ball is thrown vertically upwards, at its maximum height, its velocity is zero, but it still possesses a constant acceleration due to gravity (g) acting downwards.
(b) Possible
Example: An object moving in a circular path with a constant speed (Uniform Circular Motion). Here, the speed is uniform, but the velocity changes due to the change in direction, so it has acceleration.
(c) Possible
Example: An object moving in a circular path. The motion (velocity) is along the tangent to the circle, while the acceleration (centripetal) acts towards the center, making them perpendicular to each other.
(Another example: An airplane flying horizontally has horizontal velocity, but acceleration due to gravity acts vertically downwards, which is perpendicular.)