Teaching UP TGT Mock Test Series 2025 Physics Center of Mass and Linear Momentum Momentum and Kinetic Energy in Collisions
A force of 20 N first acts on a body of mass 2 kg and then on a body of mass 2.5 kg. If these bodies were at rest initially and force acted on them for 2 seconds, the ratio of their momenta and kinetic energies would be respectively
1
4 ∶ 5; 5 ∶ 4
2
1 ∶ 1; 4 ∶ 5
3
1 ∶ 1; 5 ∶ 4
4
5 ∶ 4; 4 ∶ 5