Question

plsssss solve its urgent my test in 2hrs plssss​

Answer 1

Ans is (C)

m=−43

At t = 4.5 sec F⃗ = – 2N

Total Impulse I=[12×3×4]−[12×2×1.5]

⇒ = 6 – 1.5 = 4.5 SI unit

Impulse = change in momentum

4.5 = 2[v – 0]

v=4.52=2.25m/sec

K.E.=12×2×(2.25)2=5.06 J