A roller coaster travels down a 120 m track in 12.5 seconds how fast does the roller coaster go

The force will determine the acceleration.

How many molecules are present in 3 mols of silicon dioxide (sio2)?

The position of a crate sliding down a ramp is given by x=(0.05t^3) m, y=(1.7t^2) m, z=(6−0.85t^5/2) m, where t is in seconds. (a) determine the magnitude of the crate's velocity when t = 2 s. (b) determine the magnitude of the crate's acceleration when t = 2 s.