Falling Behind in Studies? Join Our Performance Improvement Batch. Enroll For Free
One of our academic counsellors will contact you within 1 working day.
Click to Chat
1800-1023-196
+91-120-4616500
CART 0
Use Coupon: CART20 and get 20% off on all online Study Material
Welcome User
OR
LOGIN
Complete Your Registration (Step 2 of 2 )
A girl of height 90 cm is walking away from the base of a lamp-post at a speed of 1.2 m/s. If the lamp is 3.6 m above the ground, find the length of her shadow after 4 seconds.
Dear student, Take a right angled triangle and use pythagoras theorem a2+v2=l2 Now differentaite both sides and da/dt=0 since length of wall is constant and is not changing with time....
Dear student,
Take a right angled triangle and use pythagoras theorem
a2+v2=l2
Now differentaite both sides and da/dt=0 since length of wall is constant and is not changing with time....
Post Question
Dear , Preparing for entrance exams? Register yourself for the free demo class from askiitians.
points won -