what is the final speed of an object that starts from rest and accelerates uniformly at 4.0m/s^2 over a distance of 8.0m

Aprojectile is launched horizontally 10m above the ground and with an initial velocity of 15 m/s. a) sketch the trajectory using an appropriate coordination system. b) how long for the projectile to reach the ground. c) how far did projectile travel horizontally before striking the ground. d) determine the projectilex & y position at t-1.3s e) determine the magnitude and direction of projectile velocity at t= 1.3s f) determine the magnitude and direction of projectile acceleration at t-1.3s

Determine the maximum r-value of the polar equation r =3+3 cos 0

Could someone . i have tried to solve myself but my calculation is off