1. Answer true or false to the following:

A ball rolling on a flat table has a horizontal but no vertical

component of motion.

A rock falling straight downward with no wind blowing has no

horizontal component of motion.

A baseball hit into the air toward right field has vertical but no

horizontal component of motion.

A basketball bounced straight up and down has vertical but no

horizontal component of motion.

Ball - - true

Rock - - true

Baseball - - False

Basketball - - true

All the statements are true except the third statement related to baseball hit into the air toward right field has vertical but no horizontal component of motion.

True - A ball rolling on a flat table has a horizontal but no vertical component of motion.

True - A rock falling straight downward with no wind blowing has no horizontal component of motion.

False - A baseball hit into the air toward right field has vertical but no horizontal component of motion.

True - A basketball bounced straight up and down has vertical but no horizontal component of motion.

Answer: Option true 1, 2, 4, and false 3

Explanation:

For the first statement of ball rolling on a flat table, as the table was flat, the acceleration due to gravity may not be acting on the ball kept on the table. When external push is given on the ball kept on the flat table, the ball will be moving along the direction of the push and not perpendicular to the direction of push.

So, the statement 1 is true. Similarly, the motion of rock as well as basketball in a straight up and down direction exhibit only the vertical component as both of them will be moving due to acceleration due to gravity.

So, the second and last statement is also true. But in case of baseball hitting the air toward right field means the ball is made to hit at a particular angle. So as the baseball will follow a path of parabola it will have only horizontal component of motion and not vertical component of motion. So the third statement is false.