When a projectile lands, the angle made between the projectile and the ground corresponds to which of the following aspects of its motion?

a)the direction of the acceleration vector just before impact
b)direction of the velocity vector just before impact
c)direction of the total displacement vector for the projectile's path
d) none of the above

b)direction of the velocity vector just before impact

A solid aluminum cylinder,density 2700kg/m3,weigh 67g in air and 45g when immersed in turpentine.determine the density of turpentine.

To determine the answer to this question, we need to understand the different aspects of motion mentioned and how they relate to the angle the projectile makes with the ground.

a) The direction of the acceleration vector just before impact: The acceleration of a projectile is always directed downward due to gravity. This means that the acceleration vector is vertically downward, regardless of the angle the projectile makes with the ground. Therefore, the angle does not correspond to the direction of the acceleration vector just before impact.

b) The direction of the velocity vector just before impact: The velocity vector of a projectile consists of two components: horizontal and vertical. The horizontal component remains constant (assuming no horizontal forces are present), while the vertical component changes due to the effect of gravity. So, the angle that the projectile makes with the ground does not directly correspond to the direction of the velocity vector just before impact.

c) The direction of the total displacement vector for the projectile's path: The total displacement vector is the vector sum of all the displacements of a projectile from its starting point to the ending point. It includes both the horizontal and vertical components of the displacement. The angle that the projectile makes with the ground does not provide direct information about the horizontal or vertical components of the displacement vector.

Therefore, the correct answer is d) none of the above. The angle made between the projectile and the ground does not directly correspond to any of these aspects of its motion.