Question

2kg ball cover 10 meter in 5 second .find linear momentum

Answer 1

ANSWER

We know,

Area under force-time graph = change in linear momentum

∴ΔP=21×2×4+(4−2)×4+(4.5−4)×2.5+21×(4.5−4)(4−2.5)+(6.5−4.5)×2.5

∴Pf−Pi=18.625

Now,

Pi=m×vi=2×5=10kgm/s

∴Pf=10+18.625

∴Pf=28.625kgms−1

∴vf=14.3125m/s