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Horizontal Projectile Exercises. Una risorsa per il CLIL di Fisica in lingua inglese

red - Di seguito vengono proposti alcuni esercizi sul lancio orizzontale di un proiettile, utili per le classi in cui sono attivi dei percorsi CLIL di Fisica in lingua inglese.

Horizontal Projectile

1. A ball is thrown horizontally from the roof of a building 9.0 m tall and lands 9.5 m from the base. What was the ball’s initial speed?

2. A ball thrown horizontally at 23.7 m/s from the roof of a building lands 31.0 m from the base of the building. How high is the building?

3. A tiger leaps towards an unsuspecting ostrich horizontally from a 7.5 m high rock with a speed of 3.2 m/s.

a. How far from the base of the rock will the tiger land?

b. What are the horizontal and vertical velocity components for the tiger just before it hits land?

4. A diver running 2.3 m/s dives out horizontally from the edge of a vertical cliff and 3.0 s later reaches the water below.

a. How high was the cliff?

b. How far from the base of the cliff did the diver land?

5. The Joker stole a Gotham City police motorcycle and is driving at 35 m/s down the highway. Batman witnesses the crime from his Batcopter, which is stationary hovering above the highway. Batman waits until the Joker is 10 m behind him before horizontally ejecting from the Batcopter.

a. If Batman lands on top of the Joker after 4.5 seconds, how fast was he ejected from the Batcopter?

b. What height is the Batcopter at as it hovers above Gotham?

c. What are Batman’s horizontal and vertical components of velocity as he foils yet another of The Joker’s plans?

6. A zombie horde is attacking Justin Beiber! Thankfully Iron Man has a chance to save him. Beiber is pinned against a wall terrified and crying. The zombie horde is moving as one solid mass at 1.8 m/s. Iron Man throws the vat of acid horizontally at 10.2 m/s and it lands 3.2 seconds later.

a. What height is Iron Man at?

b. At what vertical velocity does the vat hit the ground?

c. How far away does the vat of acid land?

d. If the zombie horde is 30 m away from Iron Man, does the vat hit the zombies allowing it to open and dissolve the zombies? Assume the vat is closed, can only open when hitting a sentient being, and sticks in the ground upon impact if it does not hit a sentient being because the ground is very wet.

e. Does Iron Man save Justin?

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