ITS DUE SOON ILL GIVE YOU BRAINLIST

34m/s;42.5m/s

Step-by-step explanation:

The average speed is defined as:

Distance/ time =1.7km/50 = 1700/50 = 34m/s.

Now let's consider the distance of the journey :

For the first 30s

From Newton's law of motion formula for uniform motion,

S = u × t = k × 30 = 30k

For the last 20s

From Newton's law of motion formula;u -initial velocity , v-final velocity.

S =[ (u + v)/2]t =[( k +0) /2]20 = 10k

Total distance = 30k + 10k = 40k

But 40k =1700

K = 1700/40 = 42.5m/s

a

b

d

step-by-step explanation:

the rocket cannot penetrate the ground, in a contextual sense, therefore the roots of this equation should be the domain of this function. i'll let you find the roots of this quadratic equation (hint: use the quadratic formula:  

1- c

2-a

step-by-step explanation:

mark brainliest!