How far will a rubber ball fall on 20 seconds?

Given that:

time (t) = 20 s ,

        S = ?

We know that S = ut + 1/2 at²     meters

                       since free fall, a = g = 9.81 m/s² ; u =0 ;

                        S = 0 + 1/2 × 9.81 × 20²

                        S= 1962 m

question1

1,000 tons

question2

3: 8

question 3

store d

step-by-step explanation:

can be answered using momentum.

momentum = p

p1= mass1 * velocity1

p1 = p2

therefore

p1 = 6kg * 4m/s

p1 = 24kgm/s

p2=m2 * v2

24 kgm/s = 7kg * v2

v2 = 24 kgm/s / 7kg

v2= 3.42 m/s