h-velocity-vt-4t-t2-what-is-the-net-horizontal-force-at-t-3-s-including-its-sign

Question

A 10 kg10	ext{  kg} test block moves horizontally with velocity v(t)=4t−t2v\left(tight)=$$4t-t^2. $$What is the net horizontal force at t=3 st=3	ext{  s}, including its sign?

Accepted Answer

−20 N-20	ext{ N}

Answer

20 N20	ext{ N}

Answer

−2 N-2	ext{ N}

Answer

30 N30	ext{ N}

A 10 kg10\(\text{ kg}\) test block moves horizontally with velocity v(t)=4t−t2v\(\left\)(t\(\right\))=4t-t^2. What is the net horizontal force at t=3 st=3\(\text{ s}\), including its sign?

A $10 kg$ test block moves horizontally with velocity $v (t) = 4 t - t^{2}$ . What is the net horizontal force at $t equals 3 s$ , including its sign?