F=ma step 1

What is the unit of force?

• m/s²

• N

• Kg

What is the unit of acceleration?

• m/s²

• N

• Kg

What is the unit of mass?

• m/s²

• N

• Kg

What equation links force, mass and acceleration

• F = m / a

• F = a / m

• F = m x a

What force is needed to accelerate 10kg by 10m/s² ?

• 1N

• 10N

• 100N

• 1,000N

What force is needed to accelerate 5kg by 2m/s² ?

• 2.5N

• 10N

• 0.5N

• 1N

What does kN mean?

• 0.1N

• 10N

• 100N

• 1,000N

What do you need to accelerate an object?

• Balanced forces.

• Unbalanced forces

• No forces

What happens when the forces on a moving object are all balanced?

• It continues at a constant speed.

• It stops.

• It accelerates.

• It decelerates.

Which of these is Newtons second law?

• If the forces are balanced the object will continue at a constant velocity.

• F=ma

• For every action there is an equal and opposite reaction.