Question

find impulse produce by the foce 2t-1N in four second

Answer 1

$\huge\underline\orange{\mathcal Answer}$

$\large\blue{\boxed{\mathcal J=7N.s}}$

$\huge\underline\orange{\mathcal Solution}$

Impulse J=$\int\limits^t_0{F}\,dt$

Here,

F = (2t -1) N

J=$\int\limits^4_0(2t-1)dt$

J = $\large{\mathcal{\limts^4_0[2t-1]}}$

J=$\large{\mathcal [(2×4-1)-0]}$

J=$\large{\mathcal (8-1)}$

$\huge{\boxed{\mathcal J=7N.s}}$