Question

plz explain this answer
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Answer 1

Answer:

the triangle ABC is right angled , thus pythagorean theorem can be used here.

so, AC^2 = AB^2 + BC^2

AC^2 = 40^2 + 30^

AC^2 = 1600+900

AC^2 = 2500

AC = √2500

AC = 50 m

hope it will be helpful

Answer 2

Answer:

Two blocks of masses 2 kg and 3 kg are connected by a string of length 1m. At any inst.ant the velocities of block of mass 2 kg and 3 kg are 5m/s in opposite direction and perpendicular to the length of string (Assume gravity free space)