Question

You and your friend Peter are putting new shingles on a roof pitched at 23 ∘

Answer 1

You and your friend Peter are putting new shingles on a roof pitched at 23 ∘ ^\circ . You're sitting on the very top of the roof when Peter, who is at the edge of the roof directly below you, 5.3m m away, asks you for the box of nails. Rather than carry the 2.3kg kg box of nails down to Peter, you decide to give the box a push and have it slide down to him.

uk = 0.53

Find what speed you should push the box to get It to come to rest gently at the edge of the roof.