An unsuspecting bird is coasting along in an easterly direction at 4.00 mph when a strong wind from the south imparts a constant acceleration of 0.200 m/s2. if the acceleration from the wind lasts for 2.70 s, find the magnitude, r, and direction, θ, of the bird's displacement during this time period. (hint: assume the bird is originally travelling in the x direction and there are 1609 m in 1 mile.) a) 3.59 m, and 8.59º
b) 3.59 m, and 17.2º
c) 4.88 m and 8.59º
d) 4.88 m and 17.2º

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? question 2 options: the balloons rise at the same rate. both balloons are the same size. the ballons both rise. the cold ballon is larger than the warm balloon. the cold balloon expands and rises. the warm balloon shrinks and sinks. the warm balloon expands and rises. the cold balloon shrinks and sinks.

Decreased sensitivity to an unchanging stimulus is known as

Which body is in equilibrium? (1) a satellite orbiting earth in a circular orbit (2) a ball falling freely toward the surface of earth (3) a car moving with a constant speed along a straight, level road (4) a projectile at the highest point in its trajectory