Question

let see who gives the perfect answers
and let's see who is our next branlist​

Answer 1

The si unit of force is newtons

School bag have broad straps because to reduce the pressure on our hands

Answer 2

Explanation:

1. a) sleepers are laid below rails so that the weight of passing train is spread over a large area which decreases pressure.

b) broad shoulder straps provide largest surface area so that the pressure extended by the bag on the shoulder is less and carrying the bad is easier.

c) thethe tip of sewing needle is sharp so that due to its the needle may put the force on a small area of the cloth producing a pressure sufficient to pierce the cloth being stitched. in this case the weight of a man falls on a much larger area of cushion and producing much smaller pressure.

d) the pressure exerted by the sharp knife edge is more than that exerted by the blunt one because the area on which force is exerted by the sharp knife is very small, thus it is easier to cut with these former than with the latter.

2.

a) Newton (N)

b) Newton metres

c) Newton

d) pascal (pa).

hope it will help you..