If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content

Analyzing motion using Newton's laws


A bird is flying in a straight line towards the left. At t=0, it starts to slow down and sits on a branch at t=t1. It stays on that branch thereafter.
Which of these could correctly describe the variation of the net force on the bird from t=0 to t1?
Note: Assume the bird is traveling in a horizontal line and doesn't move up or down.
Choose 1 answer: