Newton's Laws- bike

Why is it harder to start pedaling a bicycle than to keep it moving at a constant speed?

• The bicycle has less friction when it is already moving.

• You must overcome the bicycle's inertia to get it moving.

• Gravity has a stronger effect on a stationary bicycle.

• Air resistance is greater when the bicycle is at rest.

Which mathematical equation correctly represents Newton's Second Law of Motion?

• Force = Mass + Acceleration

• Force = Mass x Acceleration

• Force = Mass / Acceleration

• Force = Acceleration / Mass

To accelerate a bicycle with a greater total mass at the same rate, what is required?

• Less force must be applied.

• More force must be applied.

• The acceleration rate must be decreased.

• The mass of the bicycle must be reduced.

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According to Newton's Third Law, what causes a bicycle to move forward?

• The bicycle wheels push backward on the ground (action), and the ground pushes forward on the wheels (reaction).

• The rider's legs push down on the pedals (action), and the pedals push the wheels forward (reaction).

• The bicycle's momentum carries it forward once it starts moving.

• The force of gravity pulls the bicycle forward down a slight incline.