Question

pls answer me 5 th question ​

Answer 1

Answer:

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sorry I don't know the answer

please mark as brainlist

Answer 2

Explanation:

first find the velocity

d=400m

t=20sec

so vel=d/t

=400/20

=20m/sec

now the acceleration will be

a=(v-u)/t

here truck starts from rest therefore initial velocity (u) will be 0

so a=(20-0)/20. the time was 20sec as given

so a= 1m/sec²

now for force

f=ma here m is mass and a is acceleration

so f= (7x1000) x 1. ( 1 metric tons = 1000kg)

=7000N or 7x10³N