A hammer has 22.3 kg m/s of momentum, and is going 3.57 m/s, what is its mass ? (6.25 kg) Videoī. What are its initial and final acceleration as it takes off from earth? (9.53 m/s/s, 77.7 m/s/s) Videoģ. A 362 kg rocket, 282 kg of which is fuel, burns all of its fuel in 35.0 seconds with an exhaust velocity of 869 m/s. What thrust does it develop? (1000 grams = 1 kg) (9.69 N) VideoĮ. A rocket engine burns fuel at a rate of 9.84 grams per second, and has an exhaust velocity of 985 m/s. If the collision lasted for 0.0135 seconds, what force did the bat exert on the baseball? (1010 N) Videoĭ. A 0.142 Kg baseball going 37.0 m/s, strikes a bat, and heads straight back to the outfield at 59.0 m/s. What is the mass of the object? (6.97 kg) VideoĬ. The mass changes velocity from rest to 44.0 m/s. A 59.0 N unbalanced force is exerted on an object for 5.20 seconds. What is the momentum of a 1.22 kg hammer going 3.46 m/s? (4.22 kg m/s) Videoī. What are its initial and final acceleration as it takes off from earth?Ģ. A 122 kg rocket (total mass of fuel and rocket), burns its fuel at a rate of 3.45 kg/s for 23.0 seconds with an exhaust velocity of 772 m/s. What must be the exhaust velocity ? (1000 grams = 1 kg) (634 m/s) VideoĮ. A rocket engine burns fuel at a rate of 14.5 grams per second, and develops a force of 9.20 N. If the bat exerted a force of 2341 N, for what time was it in contact with the bat? (0.00534 s) Videoĭ. A 0.147 Kg baseball going 37.0 m/s, strikes a bat, and heads straight back to the outfield at 48.0 m/s. What is the change of velocity of the mass? (443 m/s) VideoĬ. A 35.0 N unbalanced force is exerted on a 3.10 Kg mass for 39.2 seconds. What impulse does it impart? (6.19 N s) Videoī. A rocket exerts 4.21 N of force for 1.47 seconds.
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