A particle of mass $5.7 \mathrm {~kg}$, initially at rest, experiences a time-varying force, $f ( t ) = c t ^ { 2 } + h t$ where $c = 1.3 \mathrm {~N} / \mathrm { s } ^ { 2 }$ and $h = 5.6 \mathrm {~N} / \mathrm { s }$. What is the acceleration of the particle at time $t = 4$ seconds?
A) 9.5 m/s $2$
B) 8.8 m/s $2$
C) 5.4 m/s $2$
D) 7.6 m/s $2$

Question

Quizplus · Accepted Answer

The Answer of A particle of mass $5.7 \mathrm {~kg}$, initially at rest, experiences a time-varying force, $f ( t ) = c t ^ { 2 } + h t$ where $c = 1.3 \mathrm {~N} / \mathrm { s } ^ { 2 }$ and $h = 5.6 \mathrm {~N} / \mathrm { s }$. What is the acceleration of the particle at time $t = 4$ seconds?
A) 9.5 m/s $2$
B) 8.8 m/s $2$
C) 5.4 m/s $2$
D) 7.6 m/s $2$

A Particle of Mass 5.7 kg5.7 \mathrm {~kg}5.7 kg , Initially at Rest, Experiences a Time-Varying Force

A Particle of Mass $5.7 \mathrm {~kg}$ , Initially at Rest, Experiences a Time-Varying Force