1
KCET 2019
MCQ (Single Correct Answer)
+1
-0

Two particles which are initially at rest move towards each other under the action of their mutual attraction. If their speeds are $$v$$ and $$2 v$$ at any instant, then the speed of centre of mass of the system is

A
$$2v$$
B
zero
C
$$1.5v$$
D
$$v$$
2
KCET 2017
MCQ (Single Correct Answer)
+1
-0
Two balls are thrown simultaneously in air. The acceleration of the centre of mass of the two balls when in air
A
is equal to $g$ (acceleration due to gravity)
B
depends on the speeds of the two balls
C
depends on the masses of the two balls
D
depends on the direction of motion of the two balls.
KCET Subjects
EXAM MAP