He decides to test the car by racing with another speedster, john. both start from rest,
but experienced john leaves the starting line 1.00 s before peter. if john moves with a
constant acceleration of 3.50 m/s2, and peter maintains an acceleration of 4.90 m/s2,
find (a) the time it takes peter to overtake john, (b) the distance peter travels before he
catches john, and (c) the speeds of both cars at the instant peter overtakes john.

Astone is dropped from a cliff and falls 9.44 meters. what is the speed of the stone when it reaches the ground? a. 13.6 m/sec b. 1.39 m/sec c. 185 m/sec d. 9.80 m/sec

What’s #16 asking me and how do i solve it?

You are driving to the grocery store at 20 m/s. you are 110m from an intersection when the traffic light turns red. assume that your reaction time is 0.50s and that your car brakes with constant acceleration. how far are you from the intersection when you begin to apply the brakes? what acceleration will bring you to rest right at the intersection? how long does it take you to stop after the light changes? the known values: vi=20m/s xi=110m t=.50s vf=0m/s xf=0m a=?