Newton's Second Law

what is the correct formula for force?

• F=ma

• $F=\frac{m}{a}$

• $F=\frac{a}{m}$

• $F=a\times v$

A change in velocity over time is called ___________.

• speed
• force
• acceleration
• direction

Why is it harder for the boy in Image B to get down the hill?

• Motion
• Friction
• Work
• Displacement

Deceleration is...

• Speed up
• Slow down
• Fly forward
• Jump downward

Which box will accelerate MORE given the SAME applied force?

• top

• bottom

Both boxes have the SAME mass, which box will accelerate MORE?

• top

• bottom

Find the force required to move a box having mass 10 kg with an acceleration of 9m/s² .

• 10N

• 90N

• 100N

• 20N

If these boys are pulling with the same amount of force.  What will happen?

• The boy in blue will win.
• They will not move at all.
• The boy in red will win.
• Both will fall down.

Football A has a greater mass than football B. Which football will have greater acceleration when both are thrown with the same force in the same direction?

• Football A

• Football B

• They will have the same acceleration

• Mass has no effect on acceleration

Mass and acceleration have

• a direct relationship

• an inverse relationship