Please Help!!
Thankss

What is the acceleration of a spaceship that is initially at rest and then speeds up to 220 m/s in 20 seconds

The necleus of an atom is made up of what subatomic particles?

You are driving directly behind a pickup truck, going at the same speed as the truck. a crate falls from the bed of the truck to the road. (a) will your car hit the crate before the crate hits the road if you neither brake nor swerve? (b) during the fall, is the horizontal speed of the crate more than, less than, or the same as that of the truck?