Collision in two dimensions

Collision in two dimensions results in the collision between two objects in case of the _________

• centers of masses and the contact point are not in a straight line

• centers of masses and the contact point are in a straight line

• only the centers of masses are in a straight line

• Non-of the above

If the colliding particles are in the line of collision before and after collision, the collision is said to be_________

• 3-D

• 2-D

• 4-D

• 1-D

The total momentum of a system is constant. This is the _____________

• conservation of momentum

• conservation of kinetic energy

• Impulse rule

• change in momentum

In which type of collision you apply only the conservation of momentum?____________

• Elastic collision

• Inelastic collision

• Both types of collision

• only linear collision

Given that[ M and m in kg kg , v1i = 12 m/s , v2i = 4m/s and the two balls are colliding in one line. But after collision M has an angle of 45 and m has an angle of 45. Then M = _____

• 3m

• m/3

• 3/m

• m³

For two colliding electrons in an atom. They scattered after collision in two different direction and the angle between their vectors is 130.[ V_1i=3.2×10⁵m/s and V_2i= 0.8×10⁵m/s before collision in opposite directions - the two angles are equal]

V_1f:V_2f = ___________

• 1:1

• 1:2

• 2:1

• 1:4