Physics Homework help 2 - i accidentally put it under maths

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Jih
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Hi guys, I'm really stuck on these questions please help me find the answers!

During WW1, the German army bombarded Paris with "Big Bertha." Assume Big Bertha fired shells with an initial velocity of 1.1 x 10^3 m/s [ 45 above the horizontal ]
a) how long was each shell airborne, if the launch point was at the same level as the landing point? -answer is 1.6 x 10^2 s
b) Determine the maximum horizontal range of each shell -answer is 1.2 x 10^5 km
c) Determine the maximum height of each shell -answer is 31 km

An astronaut on the Moon where gravity is 1.6 m/s^2 strikes a ball giving it a velocity of 32 m/s [ 35 degrees above the Moon's horizontal ] The ball lands in a crater floor that is 15 m below the level where it was struck. Determine
a) the maximum height of the ball -answer : 1.1 x 10^2 m
b) time of flight -answer is 24s
c) horizontal range -answer is6.2 x 10^2 m
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Joinedup
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#2
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(Original post by Jih)
Hi guys, I'm really stuck on these questions please help me find the answers!

During WW1, the German army bombarded Paris with "Big Bertha." Assume Big Bertha fired shells with an initial velocity of 1.1 x 10^3 m/s [ 45 above the horizontal ]
a) how long was each shell airborne, if the launch point was at the same level as the landing point? -answer is 1.6 x 10^2 s
b) Determine the maximum horizontal range of each shell -answer is 1.2 x 10^5 km
c) Determine the maximum height of each shell -answer is 31 km

An astronaut on the Moon where gravity is 1.6 m/s^2 strikes a ball giving it a velocity of 32 m/s [ 35 degrees above the Moon's horizontal ] The ball lands in a crater floor that is 15 m below the level where it was struck. Determine
a) the maximum height of the ball -answer : 1.1 x 10^2 m
b) time of flight -answer is 24s
c) horizontal range -answer is6.2 x 10^2 m
you will need to break the initial velocity into horizontal and vertical components using trig and then use the SUVAT equations of motion to calculate the answers.

the time of flight for the shell in the first question will be the time taken for a projectile fired vertically with the same velocity as the vertical component of the shells launch velocity to fall back to it's initial position.

the range of the shell will be the horizontal distance travelled in that amount of time calculated above at the horizontal component of initial velocity.
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