Mechanics> Hello sir, If vector A is perpendicular t...

Hello sir,
If vector A is perpendicular to vector B, then
a) A×B=0
b) A.(A+B) = A^2
c) A.B = AB
d) A.(A+B) = A^2 + AB

Pranay , 7 Years ago

Grade 11

2 Answers

Eshan

Approved

Last Activity: 7 Years ago

Aman

Answer is (b):

Given vectors are perpendicular to each other

A.(A+B)= A.A + A.B

A.A + AB cos 90^o = A.A

And A.A= A²

hence proved

Last Activity: 7 Years ago

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Mechanics> Hello sir, If vector A is perpendicular t...

Hello sir,If vector A is perpendicular to vector B, thena) A×B=0 b) A.(A+B) = A^2c) A.B = ABd) A.(A+B) = A^2 + AB

Pranay , 7 Years ago

Eshan

Aman

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Hello sir,
If vector A is perpendicular to vector B, then
a) A×B=0
b) A.(A+B) = A^2
c) A.B = AB
d) A.(A+B) = A^2 + AB

A car loaded with water having total mass 1000 kg moves on a straight horizontal Road starting from rest under the action of a force of 100 Newton. The water spills throw a small hole in the bottom at a rate of 0.1 KG per second the velocity of cart after 300 seconds is nearly.

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