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Home /Doubts and Solutions/CBSE/Class 11 Science

# CBSE Class 11 Science Free Doubts and Solutions

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## Trigonmetric

Asked by Ratanswain752 16th August 2019, 9:14 PM

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## If a body is projected at the angle of 45degree with a velocity of 20m/sec.Find it's height reached when it covers a distance of 15m in horizontal.

Asked by surjan06singh 13th August 2019, 8:04 PM

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## Height of the tower?

Asked by samratpaudel5 13th August 2019, 7:29 PM

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### CBSE - XI Science - Physics

Asked by prakriti12oct 12th August 2019, 5:22 PM

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## A stone is thrown vertically upwards with a velocity of 4.9 m/s. Calculate a) the maximum height reached. b) the time taken to reach the maximum height. c) the velocity with which it returns to the ground and d) the time taken to reach the ground. Solutions: a) 1.225m b)0.5s c)4.9 m/s d)1s

Asked by kkdmmdsd 12th August 2019, 7:51 AM

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## Derive equation of for a particle moving in a plane and show that motion can be resolved in two independent motion in mutually direction.

Asked by mohitsharma06474 12th August 2019, 2:27 AM

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## A police man is moving with constant speed on a straight road.  When he is at a distance 250m behind a car, the car starts accelerating from rest and move with a constant acceleration 2m/s2.  The minimum speed of the police man such that he can catch the car is

Asked by ragunive 9th August 2019, 8:37 AM

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## Please explain the work done by a variable force.

Asked by kandappan 9th August 2019, 6:07 AM

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## A particle is projected with a velocity u at an angle ø with horizontal.find radius of curvature of the parabola traced out by the particle at the point where velocity makes an angle ø/2 with the horizontal

Asked by ojasmagarwal 7th August 2019, 7:15 PM