Grade 12Mechanics

A projectile is dropped from a tower. Distance travelled by the projectile in the last two seconds is 88m. What is the height of the tower?

Sushant Singh Raghu

8 Years agoGrade 12

3 Answers

Soumya

8 Years ago

Well distance travelled by projectile in last 2 second =88mSo from this we can find out the velocity at that point that is 44m/s and its vertical component is also 44m/sUsing 3rd law of motion we ge h=44*44/2*10=96.8

Sushant Singh Raghu

8 Years ago

Calculate this in two steps.1) 1^st for the journey H-80 with tine t-2 and then for the last 2 seconds.

sam

8 Years ago

ANS. 151.25

2 equations

H=1/2 g t^2

H-88= ½ g (t-2)^2

2 equations 2 unknowns, solve it, find H

on solving, we get H=151.25 m

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A projectile is dropped from a tower. Distance travelled by the projectile in the last two seconds is 88m. What is the height of the tower?

Sushant Singh Raghu

3 Answers

Soumya

Sushant Singh Raghu

sam

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