Question

In order to obey social distancing requirements, you toss (clean) supplies to your elderly next door neighbor during the quarantine. Using an overhand throw, you launch a box of face masks from an initial height of 1.89 ? above the ground. It reaches their driveway a horizontal distance of 7.62 ? away in 1.30 ???????.

1. (8 points) What was the initial speed and angle of your throw? Express your answer to 3 significant figures.

2. (5 points) If the tree branches are all more than ?. ?? ? above the ground, is it possible for your throw to hit any of them?

Answer 1

see the diagram :

given :

y = -1.89 m

R = 7.62 m

t = 1.3 s

for horizontal motion :

for vertical motion :

the initial speed of throw = [answer]

the angle of projection above horizontal = .[answer]

the maximum height reched by the box above it's level of projection is = H =

Maximum height reached by the box above ground = 1.89 + 1.23 = 3.12 m.

As the total height is less 5 m, the box will not hit any branch of tree. [answer]