Newton's Laws

Question 1

Who proposed the laws of motion?

Answer 1

Isaac Newton proposed the three laws of motion in 1687.
1- An object will not changes its motion unless a force acts on it (inertia)
2- An object’s force is equal to its mass x its acceleration
3- For every action, there is an equal opposite reaction

Question 2

Identify the units of measurement for distance and speed.

Answer 2

Distance- mm, cm, m, km, hectares, acres
Speed- m/s, km/hr, mph

Question 3

Write the formula for calculating speed

Answer 3

Speed= distance ÷ time (DST)

Question 4

Distance time graph

Answer 4

/ speeding up, increasing distance
\ slowing, returning
_ not moving

Question 5

What is the formula for calculating acceleration?

Answer 5

acceleration= final velocity - starting velocity over time

Question 6

How do seat belts, crumple zones and air bags protect humans from injury?

Answer 6

They absorb some of the impact, removing that impact from the human body.