There are 2 more parts to the question too : (b) Prove that the height from which the ball is dropped is 20m
(c) Prove that it would take 4.9s for a similar ball to drop 20m on the Moon. It is given that the gravitational field strength of the Earth’s gravitational field strength and that air resistance is negligible in both places.

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?

Explain the consequences of this addiction to the brain tissue

Use the information presented in the graph to answer the questions. which segments show acceleration? which segment indicates that the object is slowing down? what is the velocity of segment b? what is the acceleration of segment b?