Solving Kinematic Equations 3

Solving Kinematic Equations 3

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A car starting from rest ends up going 45 m/s in 12 sec. How far did they travel during this time?

What is 45 m/s?
1. Δx
2. v_f
3. Δt
4. v_i
5. a
A car starting from rest ends up going 45 m/s in 12 sec. How far did they travel during this time?

v_f = 45 m/s

What is 12 sec?
1. Δt
2. Δx
3. a
4. v_f
5. v_i
A car starting from rest ends up going 45 m/s in 12 sec. How far did they travel during this time?

v_f = 45 m/s
Δt = 12 sec

What is "starting from rest"?
1. a
2. v_f
3. v_i
4. Δt
5. Δx
A car starting from rest ends up going 45 m/s in 12 sec. How far did they travel during this time?

v_f = 45 m/s
Δt = 12 sec
v_i = 0 m/s

What are you looking for?
1. a
2. v_f
3. v_i
4. Δx
5. Δt
A car starting from rest ends up going 45 m/s in 12 sec. How far did they travel during this time?

v_f = 45 m/s
Δt = 12 sec
v_i = 0 m/s
Δx = ___

Which equation can you use?
1. Δx = (½)(v_i + v_f)Δt
2. v_{_f}² = v_i² + 2aΔx
3. v_f = v_i + aΔt
4. Δx = v_iΔt + (½)a(Δt)²