A particle moves in a straight line from (1,2,3) to (4,6,8) with initial speed 5√2 m/s. It experiences a constant force $\vec{F}$ =(3î+4ĵ) N. Choose the correct statements.
Select all that apply

Question

A particle moves in a straight line from (1,2,3) to (4,6,8) with initial speed 5√2 m/s. It experiences a constant force F ⃗ \vec{F} F =(3î+4ĵ) N. Choose the correct statements.

G1 Physics · Accepted Answer

The displacement is (3î+4ĵ+5k̂) m with magnitude 5√2 m; because the motion is along the line and the initial speed is 5√2, u⃗=(3î+4ĵ+5k̂) m/s. W=F⃗·Δr⃗=25 J and initial power F⃗·u⃗=25 W. If velocity is unchanged, another force must cancel F⃗. Hence A-D are all correct.