Question

a bird was flying in the direction of north when suddenly the wind changed its direction to northeast. was there a force exerted on the bird? select one: a. yes b. no c. not enough information jim put on the brakes while he was riding his bicycle. was there a force exerted on the bike? select one: a. yes b. no c. not enough information

Explanation:

1. For the bird - When the wind direction changes from North to Northeast, a change in the bird's motion situation occurs. According to Newton's first law, a change in motion requires a force. So, a force is exerted on the bird.
2. For Jim's bike - When Jim puts on the brakes, the bike slows down. A change in velocity (deceleration) means a force (friction force from the brakes) is exerted on the bike.

Answer:

For the bird: a. Yes
For the bike: a. Yes