How many atoms does each element have? NH4

Nickel: :1, Hydrogen: 4

Nitrogen: 0, Hydrogen: 4

Nitrogen: 1, Hydrogen: 4

Nickel: 1, Hydrogen: 1

What is relative velocity? in which condition is relative velocity known by adding the velocity of the first body and that of the second body

Rank the automobiles based on the magnitude of the force needed to stop them, from largest to smallest.2000 kg car going 5m/s500 kg car going 20 m/s1000 kg car going20m/s500 kg car going10m/s1000 kg car going10/s4000 kg car going 5m/s 0 0 603

Lacie kicks a football from ground level at a velocity of 13.9 m/s and at an angle of 25.0° to the ground. how long will the ball be in the air before it lands? how far will the football travel before it lands?