Question

Two objects, A and B, have the same mass but object A is very sticky and object B is not. If a ball is thrown with the same speed at these objects on a frictionless surface (and the ball sticks to A), what can be said about the final speeds of A and B? please explainnnn

1. a) Object A moves faster than B.

2. b) Object B moves faster than A.

3. c) Both objects have the same final speed because the ball was thrown with

   the same speed in each case.

4. d) The answer depends on the mass of the ball.

Answer 1

here,

as the surface of object A is sticky and the ball sticks to the surface of object A

some energy is converted into the internal energy due to heat

and the kinetic energy of the ball is not fully transfered to the object A

on the other side

the whole kinetic energy of ball is transfered to object B

as both the objects have same mass

the speed of object B must be greater than A

so, the correct option is b) object B moves faster than object A