SUVAT

Question 1

When do you use SUVAT equations?

Answer 1

When acceleration, A, is constant (free fall or terminal velocity) and, velocity changes, V and U.

Question 2

When do you use v² = u² +2as?

Answer 2

For an object falling from a height or bouncing up

ball practical for visual reference

Question 3

For projectile motion, how do you calculate vertical motion?

Answer 3

> Vertical component (uᵥ = Hcosθ)
vᵥ = uᵥ + at; At peak, vᵥ = 0, so 0 = uᵥ + at
t = uᵥ / a
Multiply time by 2

Question 4

For projectile motion, how do you calculate horizontal motion?

Answer 4

Good ol’ speed = horizontal distance / time (or v = sᴴ / t)

Question 5

Why can’t you use speed = distance / time for vertical motion?

Answer 5

That equation can only be used if acceleration is 0 (or irrelevant)

Question 6

What is normal reaction, and how does normal force most often relate to upthrust?

Answer 6

> Normal reaction is the force that usually acts against weight
Normal reaction = Difference in weight and upthrust
Without normal reaction, there would be no force to counter weight