Which of these toy trains has the slowest speed?
A) Toy train 2 travels 100 cm in 10 seconds.
B) Toy train 3 travels 100 cm in 20 seconds.
C) Toy train 4 travels 200 cm in 10 seconds.
D) Toy train 1 travels 200 cm in 20 seconds.

Agymnast dismounts off the uneven bars in a tuck position with a radius of 0.3m (assume she is a solid sphere) and an angular velocity of 2rev/s. during the dismount she stretches out into the straight position, with a length of 1.5m, (assume she is a uniform rod through the center) for her landing. the gymnast has a mass of 50kg. what is her angular velocity in the straight position?

Aquarterback pedals 3.3meters southward and then run 5.7meters northward. whats the distance ? and whats the displacement?

Compare the horizontal displacement of the two balls as they travel to the ground. what do you observe?