Question

1. a boy throws a javelin through a horizontal distance of 64 m. the javelin leaves the hand 2.1 m above the ground.

a) find the horizontal and vertical components of the javelin’s initial velocity. my teacher said to find the time between the distances, and to solve for it not with vo=sqt. 2gh but I’m confused how to solve for it.

b) write parametric equations descriving the position of the object in the horizontal and vertical direction

c) with the derived functions, find out if the time of the motion would change if the javelin were thrown with speed three times as high as in the problem?

d.) how far would the javelin travel under the conditions described in (c)?

thank you for your help in advance :)

Answer 1