Question

Two stones are thrown into the air with speeds 20 m/s,40 m/s respectively ? What are the accelerations possessed by the objects ?

Answer 1

only gravity will act on them. i.e. 10m/s^2

Answer 2

acceleration by both will be -10m/s2 this is because any object thrown wrt gravity has acceleration equal to acceleration due to gravity i.e. 10m/s2. when they come down it is +