Newtons 2nd and 3rd Law

(Using F_net=ma), What net force is required to accelerate a car at a rate of 2 m/s² if the car has a mass of 3,000 kg?

• 6,000 N

• 1,500 N

• 3,002 N

• 2,998 N

(Use F_net=ma), A 10 kg bowling ball would require what force to accelerate down an alleyway at a rate of 3 m/s²?

• 30 N

• 13 N

• 3.3 N

• 0.3 N

(Use F_net=ma). Sally has a car that accelerates at 5 m/s². If the car has a mass of 1,000 kg, how much force does the car produce?

• 5,000 N

• 200 N

• 0.005 N

• 1,005 N

What is Newton's First Law

• F=ma

• Every action has an equal and opposite reaction

• Friction

• An object at rest stays at rest, an object in motion stays in motion.

True or False. Acceleration of an object is directly proportional to the net force acting on it?

• True

• False

What happens when unbalanced forces act on an object at rest?

• the object remains at rest

• the object begins moving in an unpredictable direction

• the object begins moving in the direction of the net force

• the object begins moving opposite to the direction of net force

What is force?

• A push exerted on an object

• A push or pull exerted on an object

• A pull exerted on an object

• Nothing

Newton’s law states that for every action, there is an ________ reaction.

• unequal and opposite

• equal and similar

• stronger and opposite

• equal and opposite

When a small car pushes a big truck, the truck applies an equal and opposite force on the car.

• False

• True

How is this an example of Newton’s Third law?

• Only the ball is using the head

• They are both exerting an equal force on each other

• Only the head is pushing the ball