A block is thrown on a moving belt with initial velocity 2 m s⁻¹ relative to ground. The belt moves at 4 m s⁻¹ in the opposite direction. The block stops slipping after 4 s. Which statements are correct?
Select all that apply

Question

A block is thrown on a moving belt with initial velocity 2 m s⁻¹ relative to ground. The belt moves at 4 m s⁻¹ in the opposite direction. The block stops slipping after 4 s. Which statements are correct?

Select all that apply

G1 Physics · Accepted Answer

At the end of slipping the block velocity equals belt velocity -4 m s⁻¹. Thus a=(-4-2)/4=-1.5 m s⁻². Ground displacement in 4 s is 2(4)-0.75(16)=-4 m, magnitude 4 m → B. Setting s=2t-0.75t²=0 gives t=8/3 s → D. Belt displacement is -16 m, so block relative displacement is -4-(-16)=12 m → C. Hence B,C,D.