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- A ball is thrown vertically upward with a speed of 15.0 m/s. (a) How high does it rise? (b) How long does it take to reach its highest point? (c) How long does it take to hit the ground after it reaches its highest point? (d) What is its speed when it returns to the level from which it started?An apple is thrown vertically upward with an initial velocity of 10.3m/s.How long does it take for the appleto reach its maximum height?A stone is thrown with an initial upward velocity of 39.7m/s and experiences negligible air resistance. If we take upward as the positive direction, what is the velocity (in m/s) of the stone after 6.5s?
- A person throws a ball upward into the air with an initial velocity of 15.0 m/s. (a) Calculate how long does it takes to reach its maximum height? (b) Calculate how high it goes? (c) Calculate how long the ball is in the air before it comes back to the hand. Ignore air resistance. (d) Calculate the velocity of the ball when it returns to the thrower’s hand (point C in figure)An object starts with an initial velocity of 14.0 m/s [W] and has an acceleration of 1.2 m/s² [W]. a) What is the displacement of the object after 3.0 s? b) What is the final velocity of the object after 3.0 s?The initial speed of a projectile fired upwards from ground level is 20 m/s, what its maximum height?
- A projectile is thrown from the top of a cliff with an initial speed of 25 m/s at an angle of 600 up from the horizontal. If the projectile lands 100 m from the base of the cliff how tall is the cliff?Superman starting from rest has an acceleration of 10m/s2 up. He makes it 127m into theair before he’s exposed to kryptonite and is only under the influence of gravity.(a) How long after take off is Superman exposed to kryptonite?(b) What is Superman’s velocity when he is exposed to the kryptonite?(c) What is the maximum height Superman reaches?(d) What is the total amount of time Superman is in the air?A skateboarder decides to try to jump from the top of a set of stairs and land at the level bottom. She leaves the top of the stairs with a horizontal velocity of 15.0 m/s. If the top of the stairs is 2.0 m high, what will her airtime be?
- A stone is thrown with an initial speed of 20 m/s at an angle of 35° above the horizontal from the top of a 53 m building. What is the speed of the rock as it strikes the ground (ignore air resistance).A juggler throws a bowling pin straight up with an initial speed of 6 m/s from an initial height of 3.4 m. How much time elapses until the bowling pin returns to the same initial height?A projectile is launched off of a 19.6 m high building with an initial velocity of 26.4 m/s at an angle of 33.2 degrees relative to the horizontal. What is the speed of the projectile when it reaches it maximum height?