AT&T; LTE 11:35 PM AP Physcs-Advaced Projectiles L A soldier throws a grenade at

Question

AT&T; LTE 11:35 PM AP Physcs-Advaced Projectiles L A soldier throws a grenade at a velocity of 15 mis at an angle of 40 degrees alf olf the top of a citf that s 5.75m above the beach below. How tar from the base ol the cliff does the grenade land? 2. A potato gun firing team sets out to break the school record for range. The potato is fired at an angle o 46.3 degrees above the horizontal and lands 143.11 m from the gun. What muzzle velocity did the potato have? How high in the air did the potato go? How long was it in the air? 3. A large artillery piece is mounted on the back of a railroad car. The ralroad car begins from rest and accelerates at.110 m/s2 west for 5 minutes and 35 seconds. The artillery is then fired east at an angie of 43 degrees above the horirontal at a velocity of 450.5 m/s. Find the range of the shel 4 Chipping from the rough, a golfer sends the ball over a 3.00 m high tree that is 14.0 m away. The ball lands at the same level from which it was struck after traveling a horizontal distance of 17.8 m on th green. Iit the ball left the club at 54.0 degrees above the horizontal and landed on the green 224 seconds later, what was its initial speed? How high was the ball when itpassed over the tree? S. A goifer hits a ball from the origin with an intial speed of 30.0 mis at an angle of 50.0 degrees above the horizontal. The ball lands on a green that is 5.00 m above the level where the ball was hit. Who long was the bal in the ai? How far has the beall traveled horiorly? What is the speed of the ball rgh before impact? How long would the ball be in the air ithe green was 5.00 m below the initial level 6. A hockey puck just clears the 2.00 m high boards on its way out of the rink. The base of the boaeds is 20.2 m frente port where the puck launched. GNenthe launch angieofthe puck, e, oune a strategy that you can use to fir d its rmai veoty. Use your strategy tofnd when -150 I really need help with these questions as soon as possible, I don't understand them. 6. A hockey puck just clears the 2.00 m high boards on is way out of the rink. The base of the boards is 20.2 m from the point whene the puck is launched Given the launch angle of the puck, e, outine a strategy that you can use to find its initial velocity, vi Use your strategy to find vi when e - 15.0 degrees 7. A cannon is placed at the bottom of a ciff that is 61.5m tal the cannon is hot straight upward, the cannonball just reaches the top of the citf. What is the initial velocity of the cannonbal? Suppose a second carnon s laced at thetopofthe cit This carron s teed horrortanygeng es caro tals the same intial velocity as the cannon below Show that the range of this cannon is the same as the maximum range as the cannon that is directed upwards. Support your answer with mathematical proo

Explanation / Answer

here,

1)

initial speed , u = 15 m/s

theta = 40 degree

h0 = 5.75 m

let the time taken to reach the ground be t

h0 = - u * sin(theta) * t + 0.5 * g * t^2

5.75 = - 15 * sin(40) * t + 0.5 * 9.81 * t^2

t = 2.45 s

the horizontal distance , x = u * cos(theta) * t

x = 15 * cos(40) * 2.45 m

x = 28.2 m

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