Question

while climbing a tree, you pick an apple and throw it straight down. after 1 second the apple is travelling 18m/s how fast will the apple be travelling 3 seconds later? please show equations and solutions

Answer 1

According to the kinematical equation, the velocity of an object moving downward is
   
If the velocity at a time t_1 is v_1, and the velocity at time t_2 is v_2, then,
  
And
  
And so,
   
  
  
  Now putting the given values, v_1 = 18 m/s, t_2 = 3 s, t_1 = 1 s,