Choose the answers that describe an example of acceleration.

A. A car follows a gentle curve in the road.
B. A batter swings a bat and hits a ball.
C. A truck parked on a hill doesn't move all day.
D. A runner slows down after finishing a race.
E. A car travels at a constant speed of 30 m/s down a highway.
F. An apple falls from a tree.

What would be the result of an alpha particle coming into a magnetic field? a) the alpha particle will stop moving. b) the alpha particle will reverse its direction. c) the alpha particle will be deflected in a curve path. d) the alpha particle will continue to travel in a straight line.

Abird flies directly overhead from where you stand at an altitude of 300.0 m and at a speed horizontal to the ground of 20.0 m/s. the bird has a mass of 2.0 kg. the radius vector to the bird makes an angle \thetaθ with respect to the ground. the radius vector to the bird and its momentum vector lie in the xyxy-plane. what is the bird’s angular momentum about the point where you are standing?

State the below theories and give the name of the writer of the theory 1. wave theory 2. quantum theory 3. corpuscular theory 4. electromagnetic theory