The diagram below shows a boat moving north in a river at 3 m/s while the current in
the river moves south at 1 m/s.
N
wfe
S
Current
1 m/s
Boat
13 m/s
How will the boat be affected if it enters a
part of the river where the current is moving
south at 2 m/s?

The astronauts on the space shuttle flights experienced an acceleration of 29 m/s2 (about 3 "g's") during lift-off. what upward force must the astronaut's seat apply to the astronaut in order to cause this acceleration? assume the astronaut's mass is 70 kg, and compute this force when the acceleration is near the earth's surface so their weight equals latex: mg m g .

Aviolently rotating column of air is formed around a region of extremely low air pressure above land. which of these weather conditions is most likely to follow? blizzard cyclone tornado hurricane

Based on this activity, is kinetic energy always transformed into potential energy?