If a runner decreases his velocity from 0m/s to +20m/s in 2.0s, what is was his average acceleration?

Aprojectile is launched horizontally 10m above the ground and with an initial velocity of 15 m/s. a) determine the magnitude and direction of projectile velocity at t= 1.3s b) determine the magnitude and direction of projectile acceleration at t=1.3s

In the 1980's, congress authorized the u. s. department of energy to build the wipp facility in the chicuahuan desert in new mexico. what is the purpose of wipp?

If two parallel light rays hit a mirror, they will not be parallel to each other after they reflect.