Where is the value of kinetic energy equal to zero?

A
B
C
D
E

Explanation:

The kinetic energy is zero if the speed is zero.

Thys, if the pendulum is in motion, the kinetic energy is zero in point A, the point with highest altitude. This is because the pendulum will start to swing down.

If the pendulum is at rest, the kinetic energy is zero in point E.

nah.   i'm just sleepy.

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.