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Q.A projectile is fired on a horizontal ground.Coefficient of restitution between the projectile and the ground is e.Let a,b and c be the ratio of time of flight T(1)/T(2), max. height (H(1) / H(2) ) and horizontal range (R1/R2) in first two collisions with the ground.Then:(Options) a. a = 1/e; b= 1/e ; c=1/e^2(e square) or d. all of the above.

Q.A projectile is fired on a horizontal ground.Coefficient of restitution between the projectile and the ground is e.Let a,b and c be the ratio of time of flight T(1)/T(2), max. height (H(1) / H(2) ) and horizontal range (R1/R2) in first two collisions with the ground.Then:(Options)


 


a. a = 1/e;


b= 1/e ;


c=1/e^2(e square)


 or d. all of the above.

Grade:11

1 Answers

AKASH GOYAL AskiitiansExpert-IITD
419 Points
11 years ago

Dear Raj

Effect of cofficient of restitution can be calculated be vertical velocity say v effect.

Time of flight  proportional v

max height prportional to v^2

Haorizontal range prportional to v

T(1)/T(2)=1/e

H(1)/H(2)=1/e^2

R(1)/R(2)=1/e

So option a is correct

All the best.

AKASH GOYAL

AskiitiansExpert-IITD

 

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