Hello,
The exosphere is the lowest<span> in density of the </span>layers of the atmosphere.
The higher up you get into the atmosphere, the lower the density becomes. Thus, the troposphere has the highest density of the five layers.
Faith xoxo
Given that,
Mass of the object, m = 1 kg
It moves in a circle of radius 0.5 m with a speed of 5 m/s
To find,
The direction of the acceleration.
Solution,
Whenever an object moves in a circular path, the only force that acts on its is centripetal force which is given by the formula as follows :

The centripetal acceleration acts in the direction of force. It acts along the radius of the circular path. In this figure, the direction of the acceleration is shown at point d.
A horizontal force is applied to an object making it run with a constant velocity across a surface.
(last choice)
The speed increases from X to W because a component of the gravitational force acts in the direction of the velocity.