a block kept on a frictionless horizontal surface is acted upon by a force of 100N, as shown in the figure below.
What magnitude of force must be applied on the block from the opposite direction to stop its motion?
A) 50 N
B) 75 N
C) 100 N
D) 200 N
![a block kept on a frictionless horizontal surface is acted upon by a force of 100N as shown in the figure belowWhat magnitude of force must be applied on the bl class=](https://us-static.z-dn.net/files/d6b/c8f66fb57b820bfe4b82dd9207da794c.jpg)