Answer: car 1 is going how fast 
Explanation: no need to answer without speed I won't know distance.
 
        
             
        
        
        
Answer:........... ..       .....
 
        
             
        
        
        
Answer:
m=417.24 kg
Explanation:  
Given Data
Initial mass of rocket  M = 3600 Kg
Initial velocity of rocket vi = 2900 m/s  
velocity of gas vg = 4300  m/s
Θ = 11° angle in degrees
To find 
m = mass of gas  
Solution
Let m = mass of gas    
first to find Initial speed with angle given 
So
Vi=vi×tanΘ...............tan angle
Vi= 2900m/s × tan (11°)
Vi=563.7 m/s
Now to find mass
m = (M ×vi ×tanΘ)/( vg + vi tanΘ)
put the values as we have already solve vi ×tanΘ
m = (3600 kg ×563.7m/s)/(4300 m/s + 563.7 m/s)
m=417.24 kg
 
        
             
        
        
        
Answer:
a) The velocity is 2.94m/s
b) 0.441
Explanation:
a) Assume gravity is 9.8m/s^2
Use the equation below to solve for the velocity at 0.30 seconds
 ,
, 
vf =unknown velocity  vi= initial velocity vi=0m/s  a= 9.8m/s^2 t=0.30seconds
Step 1: Substitute the variables with the knowns

Step 2: Solve

b) 
Use the equation below to solve for the displacement at 0.30 seconds

Step 1: Substitute the same variables with the knowns

Note that vi*t=0 as vi=0m/s
Step 2: Solve
x=0.441m