Physics problems (circular motion) help please?
1. In which of the following situations would an object be accelerated?
i. it moves in a straight line at constant speed
ii. it ovies with uniform circular motion
iii. It travels as a projectile in a gravitational field w/ negligible air resistance.
c. i, ii
d. ii, iii
e. i, ii, iii
2. A point on a wheel rotating at 5 rev/second and located 0.2 m from the axis has what tangential velocity?