What force is required to accelerate a body of mass 20.0 kg from 3.00 m/s to 9.00 m/s in 10.0 s?

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?

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?

What causes the development of most clouds and precipitation in the atmosphere?