Penny measured the time that it took her rat to run through a maze. she conducted the experiment 10 times and recorded the set of data below.

times: 67 s, 69 s, 68 s, 66 s, 78 s, 70 s, 67 s, 69 s, 68 s, 66 s

which time is most likely an outlier?
66 s
68 s
70 s
78 s

The position of a dragonfly that is flying parallel to the ground is given as a function of time by r⃗ =[2.90m+(0.0900m/s2)t2]i^− (0.0150m/s3)t3j^. a: at what value of t does the velocity vector of the insect make an angle of 34.0 degree clockwise from the x-axis? b: at the time calculated in part (a), what is the magnitude of the acceleration vector of the insect? c : at the time calculated in part (a), what is the direction of the acceleration vector of the insect?

The mass of a bowling ball is 10 kg and the mass of a ping pong ball is 0.015 kg. if the two objects are 5 meters apart, what is the gravitational force ?

The force needed to overcome static friction is usually less than that needed to overcome kinetic friction. true or false?