Newton's Second Law of Motion

An 800-newton person is standing in an elevator. If the upward force of the elevator on the person is 600 Newtons, the person is

• at rest

• accelerating upward

• accelerating downward

• moving downward at constant speed

____ = mass x acceleration

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

Will it take more force to push an empty shopping cart or a shopping cart that is full?

• The empty shopping cart
• The full shopping cart
• They will take the same amount of force

A greater applied force is required to move an object with a greater mass than one with a smaller mass.

• True
• False

According to Newton's second law, if you increase the force applied to an object :

• it accelerates more
• it doesn't move
• you get more inertia
• it decelerates

Is a car going around a corner an example of acceleration?

• Yes

• No

I the mass of an object is 10 kg. And the acceleration is 10 m/s², what is the force on the object?

• 1000 N

• 20 N

• 10 N

• 100 N

A man weighs 900 Newtons standing on a scale in a stationary elevator. If some time later the reading on the scale is 1200 Newtons, the elevator must be moving with

• constant acceleration downward

• constant speed downward

• constant acceleration upward

• constant speed upward

If a force of 26 N is exerted on two balls, one with a mass of 0.52 kg and the other with a mass of 0.78 kg, which ball will have the greater acceleration? (F=ma)

• The one with a mass of .78 kg will have the greatest acceleration.

• The one with a mass of .52 kg will have the greatest acceleration.

• They will both accelerate at the same rate.