FísicaBásico3 de julio de 20261 respuestas

I need to answer all that question give me the answer plese (with short answers)I?

I need to answer all that question give me the answer plese (with short answers) I. 1 - Explain why velocity, but no speed, is a vector 2 - Describe how to use a vector to represent the velocity of a moving object. 3 - State the difference between velocity and acceleration 4 - What happens to your body when in a moving car, it suddenly accelerates 5 - What happens to your body when in a moving car, it suddenly decelerates 6 - What is the formula to find acceleration given the time and distance of the object II. 1. A car accelerates from 5. 0 m / s to 22 m / s in 18 seconds. A) Find the acceleration. B) Find the displacement travelled during that time. 2. How far does a cyclist travel when she accelerates from rest to 6. 5 m / s in 22 s? 3. A child coasting on a bicycle slowly decelerates from 5. 5 m / s to 2. 4 m / s in 42 seconds. Determine the distance (displacement) he travels during that time. 4. A small aircraft, upon landing, can decelerate from 122 km / h to rest in 7. 2 s. What length of runway does he need to come to a full stop? 5. A car initially travelling with a velocity of 8. 0 m / s accelerates to 24 m / s in a distance (displacement) of 124 m. How long did it take to accelerate over this distance?

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Pregunta de Física · 1 respuesta · 10 votos · mejor respuesta de Jessica00

En resumen

I Speak English In A Medium Level. 1) The Velocity Is A Vector Because Has Direction And Module, And The Speed Has Only Module. Example : A Car Moving In A Velocity Of 30m / s Around North.

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Jessica0018 sept 2026

I Speak English In A Medium Level.

1) The Velocity Is A Vector Because Has Direction And Module, And The Speed Has Only Module.

Example : A Car Moving In A Velocity Of 30m / s Around North.

2) A Object Moving To A Velocity Of 50m / s Around North But The Friction Of Air Does The Object Moving To 40m / s Around West, Find Its Vector Velocity.

V = Raiz (50m / s) ^ 2 + (40m / s) ^ 2

V = Raiz 2500m / s + 1600m / s

V = Raiz 4100m / s

V = 64, 03m / s

3) Time.

Aceleration = Delta Velocity / Time

Time = Vf - Vi / a

4) Your Body Bow Toward Back

5) Your Body Bow Toward Ahead

6) Here We Can Know The Velocity With The Distance And The Time

a = Delta Velocity / Time.

A) Vf = 22m / s ; Vi = 5m / s ; t = 18s

a = 22m / s - 5m / s / 18s

a = 17m / s / 18s

a = 0, 94m / s ^ 2

The Car Accelerates 0, 94m / s ^ 2 In 18 Seconds

b) Displacement.

D = t (Vi + Vf) / 2

d = 18s (5m / s + 22m / s) / 2

d = 18s (27m / s) / 2

d = 18s (13, 5m / s)

d = 243metters

2) a = 6, 5m / s - 0 / 22s

a = 0, 29m / s ^ 2 - - - > Acceleration

Distancia.

D = 22s (6, 5m / s) / 2

d = 22s (3, 25m / s)

d = 71, 5m - - - > Distance

3)Vi = 5, 5m / s ; Vf = 2, 4m / s ; t = 42s

d = t (Vi + Vf) / 2

d = 42s ( 5, 5m / s - 2, 4m / s) / 2

d = 42s (3, 1m / s) / 2

d = 42s (1, 55m / s)

d = 65, 1 m

4) 122Km / h - - - > m / s

122Km / h (1000m / 1Km) (1h / 3600s)

33, 88m / s

d = 7, 2s (33, 88m / s) / 2

d = 7, 2s (16, 94m / s)

d = 121, 96m

The Small Aircraft Needs 121, 86m For Come To Rist

5) We Find The Time.

With Vf = 24m / s ; Vi = 8m / s ; Distance = 124m

d = t (Vf + Vi) / 2

124m = t (8m / s + 24m / s) / 2

124m / 16m / s = t

t = 7, 75s - - - > The Car Delay 7, 75s In Travel 124m.

Now Find The Acceleration

a = Vf - Vi / t

a = 24m / s - 8m / s / 7, 75s

a = 16m / s / 7, 75s

a = 2, 06m / s ^ 2 - - - > The Car Needs An Acceleration Of 2, 06m / s ^ 2 For Travels 124m In 7, 75s

Good Luck!

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