The initial position of a mouse in a maze is . Its displacement (i.e. change in position) during a time interval of 1 minute is . What is its new position?
A 0.020-kg toy airplane is tied to a string which is hung from a ceiling. With the engine turned on, the airplane flies in a horizontal circle. Let's assume that the airplane travels clockwise along the path shown in the figure.
Suppose that the plane's position at s is m, relative to the center of the circle. (A dot is placed at this location in the figure.) A small time interval later, at , the plane's position is m.
A graduate student in biology is analyzing video of a school of fish and measures a certain fish to be at the position m moving with a velocity m/s at some instant. Approximately where will the fish be 0.100 s later?
Near-Earth asteroids are carefully tracked by NASA so that Earthlings will have some notice in the case of a catastrophic collision. You can following the tracking of near-Earth asteroids at
Suppose that in a simulation of Asteroid 2007 TU24, it is at the location km relative to the center of Earth with a velocity km/s at some clock reading. What will be its (approximate) position 1 hour later?
Note: Asteroid TU24 made its closest approach to Earth on January 29, 2008. You can read more about it at:
At some instant in time, Earth is located at the position m relative to Sun. Its velocity at this instant is m/s in the +y direction.
A golf ball rolls across the green toward the hole as shown below. Due to the grass and the slope of the green, it breaks toward the hole.
The positions of the golf ball at each second as it rolls toward the hole are given below.
Table: Positions and clock readings for the golf ball
You view the motion of a hockey puck in a video and mark its location every 0.2 s. The resulting image for three different hockey pucks is shown below. The hockey puck in each case is moving to the right. The gridlines in the images are 1 cm apart.
A GPS collar is used to track the movement of elephants in Timbuktu. (See the article at
for more information about the use of GPS to learn about migration patterns of animals.) The position of a single elephant can be downloaded every 30 minutes. At 8:00 AM, data shows that the elephant is at the position km (relative to some origin). At noon, the elephant is at km.
A cart of mass 0.50 kg (labeled Cart A) is rolling on a track in the physics lab in the –x direction at a speed of 2.0 m/s when it collides with another, more massive cart (labeled Cart B) which is at rest. After the collision, cart A rebounds and moves in the +x direction with a speed of 0.67 m/s, and Cart B moves in the –x direction. What is the change in momentum of Cart A as a result of the collision?
A 57-gram tennis ball with a velocity of m/s rebounds from a wall with a velocity of m/s. What is the tennis ball's change in momentum in kg m/s?