Students investigate the motion of two identical metal balls released simultaneously…
PHYSICS · Multi-part · CBSE · Physics · Motion in a Plane · Motion in a Plane
Problem
Students investigate the motion of two identical metal balls released simultaneously from the same height above the ground. Ball A is projected horizontally from the edge of a table, while Ball B is allowed to drop straight down from rest from the same height.
(a) Describe in words how the horizontal and vertical components of Ball A’s motion are related to one another during its flight.
(b) Using appropriate physical principles, explain whether Ball A and Ball B will strike the ground at the same instant or at different instants. Provide a clear justification.
(c) A student claims that because Ball A travels along a longer curved path than Ball B, Ball A must remain in the air for a longer time. Evaluate this claim and explain the reasoning that supports or refutes it.
(d) Identify two assumptions implicit in your explanations above that must hold true for the conclusions to be valid in a real experiment.