Answer:
Kinetic energy and momentum are conserved this statement is true for an elastic collision in two dimensions.
d is correct
Explanation:
Elastic collision :
Elastic collision in two dimensions follows same rules as a collision in one dimension.
In elastic collision, The kinetic energy and momentum are same before and after collision it means momentum and kinetic energy are conserved.
Momentum is conserved :
Before collision and after collision
[tex]m_{1}u_{1}+m_{2}u_{2}=m_{1}v_{1}+m_{2}v_{2}[/tex]
Kinetic energy is conserved:
Before collision and after collision
[tex]\dfrac{1}{2}m_{1}u_{1}^{2}+\dfrac{1}{2}m_{2}u_{2}^{2}=\dfrac{1}{2}m_{2}v_{1}^{2}+\dfrac{1}{2}m_{2}v_{2}^{2}[/tex]
In inelastic collision :
In inelastic collision, The momentum is conserved but energy not conserved.
Hence, Kinetic energy and momentum are conserved this statement is true for an elastic collision in two dimensions.
