Newton’s Laws

Question 1

Balanced forces ………….

Answer 1

Cancel each other out or have no resultant force

Question 2

Unbalanced forces …………..

Answer 2

Cause a resultant force to act on the body

Question 3

5N⬅️🎁➡️15N, Rf =

Answer 3

10N ➡️

Question 4

What is Newton’s first law?

Answer 4

A body in motion will remain in motion and a body at rest will stay at rest unless it is acted on by an external resultant force

Question 5

What is weight?

Answer 5

Weight(N) is the force of gravity acting on a body

Question 6

What is mass?

Answer 6

Mass(g) is the volume of material in a body

Question 7

What is the gravitational field strength(N/kg) of earth?

Answer 7

10N/kg

Question 8

Weight(N) =

Answer 8

Mass(g) * Gravitational field strength(N/kg)

Question 9

What is Newton’s Second Law?

Answer 9

If a non-zero resultant force acts on a body, it’s acceleration will change directly proportional to its mass

Question 10

What does Newton’s second law help calculate

Answer 10

Acceleration

Question 11

Resultant force(N) =

Answer 11

Mass(g) * acceleration(m/s)

Question 12

What is Newton’s third law?

Answer 12

If body a exerts a force on body b, then body b exerts an equal and opposite force on body a

Question 13

What forces act on a skydiver?

Answer 13

Air resistance upwards, weight downward

Question 14

Do the two forces acting on a skydiver stay the same

Answer 14

Weight remains the same, but air resistance increases