A stuntman weighing 70kg is launched into the air with a velocity of 35 m/s. a)...
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stuntman weighing 70kg is launched into the air with a velocity of
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A small rubber ball is launched by a compressed-air cannon from ground level with an initial...
A small rubber ball is launched by a compressed-air cannon from ground level with an initial speed of 18.2 m/s directly upward. Choose upward as the positive direction in your analysis. (a) What is the maximum height above the ground that the ball reaches? 0 x What is the final velocity, momentarily, at the highest point? Knowing this, and the given information, can you use a constant acceleration kinematic relation to find the height? Also, be careful of signs. What...
A projectile is launched with an initial speed of 40 m/s at an angle of 25°...
A projectile is launched with an initial speed of 40 m/s at an angle of 25° above the horizontal. (a) What are the horizontal and the vertical components of initial velocity. (b) Find the time taken by the projectile to reach the highest point and its height at the highest point. (c) How long does it take the projectile to hit the ground after launch and how far from the starting point it hits the ground. (d) Calculate the velocity...
A small rubber ball is launched by a compressed-air cannon from ground level with an initial...
A small rubber ball is launched by a compressed-air cannon from ground level with an initial speed of 13.5 m/s directly upward. Choose upward as the positive direction in your analysis. (a) What is the maximum height above the ground that the ball reaches? m (b) How long does it take to reach the maximum height? s (c) How long does it take to reach the ground after it reaches its highest point? s (d) What is its velocity just...
An object thrown vertically upward from the surface of a celestial body at a velocity of 24 m/s reaches a height of s = -0.6t2 + 24t meters in t seconds.
An object thrown vertically upward from the surface of a celestial body at a velocity of 24 m/s reaches a height of s = -0.6t2 + 24t meters in t seconds. a. Determine the velocity v of the object after t seconds. b. When does the object reach its highest point? c. What is the height of the object at the highest point? d. When does the object strike the ground? e. With what velocity does the object strike the ground? f. On what intervals is...
A small rubber ball is launched by a compressed-air cannon from ground level with an initial...
A small rubber ball is launched by a compressed-air cannon from ground level with an initial speed of 17.6 m/s directly upward. Choose upward as the positive direction in your analysis. (a) What is the maximum height above the ground that the ball reaches? 15.80 (b) How long does it take to reach the maximum height? 1.7959 (c) How long does it take to reach the ground after it reaches its highest point? 1.7959 (d) What is its velocity just...
A ball is launched directly upward from ground level with an initial speed of 22 m/s....
A ball is launched directly upward from ground level with an initial speed of 22 m/s. (Air resistance is negligible.) (a) How long is the ball in the air? 220/49 S (b) What is the greatest height reached by the ball? 1000149xm (c) How many seconds after launch is the ball 5 m above the release point? s after being thrown (first time) s after being thrown (second time) Be careful when assigning signs to the kinematic quantities. What is...
A ball is launched directly upward from ground level with an initial speed of 18 m/s....
A ball is launched directly upward from ground level with an initial speed of 18 m/s. (Air resistance is negligible.) (a) How long is the ball in the air? 3.67 (b) What is the greatest height reached by the balil? 16.53 (c) How many seconds after launch is the ball 7 m above the release point? 3.23 x s after being thrown (first time) x s after being thrown (second time) 0.44 Be careful when assigning signs to the kinematic...
4. A 90 kg rocket stuntman steps off of a platform that is 50 m above...
4. A 90 kg rocket stuntman steps off of a platform that is 50 m above the ground (and he therefore starts at rest). While he is descending, his rocket pack exerts a steady upward force of 800 N. Ignore air resistance. (a) What is the magnitude and direction of the net force on the stuntman? (b) What is his acceleration? (c) How long does it take him to reach the ground? (d) What is his speed when he reaches...
A projectile is launched straight up from ground level with an initial velocity of v0 per...
A projectile is launched straight up from ground level with an initial velocity of v0 per sec. Neglecting air resistance, its height in feet, s, after t seconds after launch is given by the equation s = –16t2 + v0t. At what time(s) will the projectile reach a height of 112 feet when v0 = 96 feet/sec? After how many seconds will it return to the ground when v0 = 96 feet/sec?
A model rocket is launched straight up from ground level with an initial velocity of 96...
A model rocket is launched straight up from ground level with an initial velocity of 96 feet per second. Its height, in feet, after t seconds is given by the equation 2 s t t t ( ) 16 96 . a. What is the model rocket’s maximum height and when in its flight does it reach this point? b. At what time(s) will it reach a height of 80 feet? c. After how many seconds will...
A small rubber ball is launched by a compressed-air cannon from ground level with an initial speed of 18.2 m/s directly upward. Choose upward as the positive direction in your analysis. (a) What is the maximum height above the ground that the ball reaches? 0 x What is the final velocity, momentarily, at the highest point? Knowing this, and the given information, can you use a constant acceleration kinematic relation to find the height? Also, be careful of signs. What...
A small rubber ball is launched by a compressed-air cannon from ground level with an initial speed of 17.6 m/s directly upward. Choose upward as the positive direction in your analysis. (a) What is the maximum height above the ground that the ball reaches? 15.80 (b) How long does it take to reach the maximum height? 1.7959 (c) How long does it take to reach the ground after it reaches its highest point? 1.7959 (d) What is its velocity just...
A ball is launched directly upward from ground level with an initial speed of 22 m/s. (Air resistance is negligible.) (a) How long is the ball in the air? 220/49 S (b) What is the greatest height reached by the ball? 1000149xm (c) How many seconds after launch is the ball 5 m above the release point? s after being thrown (first time) s after being thrown (second time) Be careful when assigning signs to the kinematic quantities. What is...
A ball is launched directly upward from ground level with an initial speed of 18 m/s. (Air resistance is negligible.) (a) How long is the ball in the air? 3.67 (b) What is the greatest height reached by the balil? 16.53 (c) How many seconds after launch is the ball 7 m above the release point? 3.23 x s after being thrown (first time) x s after being thrown (second time) 0.44 Be careful when assigning signs to the kinematic...
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