Question

clon two uses of dimensional analysis.
13. A player throws a ball vertically upwards. What is the direction of acceler
upward motion? What is the velocity at the highest point of its motion.
14 Define the terms: unit vector and equal vectors​

Answer 1

13. The direction of acceleration is downwards. The velocity at the highest point is zero.

14.Solution. A vectors whose magnitude is unity, is known as a unit vectors. If the magnitude and direction of two vectors are same, then the two vectors are called equal vectors.