A plane takes off from rest to 900 m/s in 10 seconds. Calculate the plane's acceleration.

To find acceleration you need to know change of speed (ΔS).

What is ΔS for this equation?

1.   ?    ΔS = 900 m/s
2.   ?    ΔS = 910 m/s
3.   ?    ΔS = 890 m/s
4.   ?    ΔS = 9000 m/s

A plane takes off from rest to 900 m/s in 10 seconds. Calculate the plane's acceleration.

Step 1: assign variables

Which of the following is correct?

1.   ?    
   a = ?
   ΔS= 900 m/s
   ΔT = 10 sec
2.   ?    
   a = 900 m/s
   ΔS= ?
   ΔT = 10 sec
3.   ?    
   a = 900 m/s
   ΔS= 10 sec
   ΔT = ?
4.   ?    
   
   a = ?
   ΔS= 10 sec
   ΔT = 900 m/s²

A plane takes off from rest to 900 m/s in 10 seconds. Calculate the plane's acceleration.

Step 1: assign variables
a = ?
ΔS= 900 m/s
ΔT = 10 sec

Step 2: formula

What is the correct formula?

1.   ?    a = ΔS/ΔT
2.   ?    a = ΔT/ΔS
3.   ?    a = ΔSΔT
4.   ?    a/ΔS = ΔT

A plane takes off from rest to 900 m/s in 10 seconds. Calculate the plane's acceleration.

Step 1: assign variables
a = ?
ΔS= 900 m/s
ΔT = 10 sec

Step 2: formula
a = ΔS/ΔT

Step 3: put in numbers.

Which of the following is correct?

1.   ?    a = (900 m/s)(10 sec)
2.   ?    a = (900 m/s)/(10 sec)
3.   ?    900 m/s = ΔS/(10 sec)
4.   ?    a = (10 sec)/(900 m/s)

A plane takes off from rest to 900 m/s in 10 seconds. Calculate the plane's acceleration.

Step 1: assign variables
a = ?
ΔS= 900 m/s
ΔT = 10 sec

Step 2: formula
a = ΔS/ΔT

Step 3: put in numbers.
a = (900 m/s)/(10 sec)

Step 4: calculate an answer

1.   ?    a = 90 m/s²
2.   ?    a = 90 m/s
3.   ?    a = 810 m/s²
4.   ?    a = 910 m/s²