Gravitational force

Who first formulated the law of universal gravitation?

• Newton

• Galileo

• Aristotle

• Archimedes

What does Newton's Second Law of Motion state?

• a = mF

• F = m/a

• F = ma

• m = Fa

In the equation F = ma, what does m represent?

• Meters

• Mass

• Force

• Acceleration

How much net force is required to accelerate a 2000 kg car at 3.00 m/s2?

• 2000 N

• 4000 N

• 6000 N

• 8000 N

If you apply a net force of 3 N on 100 g-box, what is the acceleration of the box?

• 5 m/s2

• 10 m/s2

• 20 m/s2

• 30 m/s2

Which is true from Newton's Third law of motion?

• For every action force there is a smaller reaction force in the opposite direction.

• For every action force there is an equivalent reaction force in the opposite direction.

• Both 1 and 2

• None of the above

What is the net force on 200 g ball when it hits a wall with acceleration of 10 m/s2?

• 1 N

• 2 N

• 3 N

• 4 N

Are mass and weight the same?

• YES

• NO

• both 1 and 2

• none of the above

What will be different on the moon than on the earth?

• weight

• mass

• both 1 and 2

• none of the above

What do you multiply mass by to get the weight?

• acceleration

• energy

• density

• gravity