Question
Problem 1: Suppose an 1850 kg elephant is charging a hunter at a speed of 6.5 m/s. Part (a) Calculate the momentum of the elephant,
Problem 1: Suppose an 1850 kg elephant is charging a hunter at a speed of 6.5 m/s.
Part (a)Calculate the momentum of the elephant, in kilogram meters per second.
part b: How many times larger is the elephant's momentum than the momentum of a0.042-kg tranquilizer dart fired at a speed of340m/s?
part c: What is the momentum, in kilogram meters per second, of the87.5-kg hunter running at4.3m/s after missing the elephant?
Problem 2: Two objects are dropped (with zero initial speed) from a heighth.
If object A has twice the mass of object B, what can be said about the momentum of each just before they hit the ground? Ignore air resistance. MultipleChoice: 1) object A has twice the momentum of object B. 2) object A has one fourth the momentum of object B. 3) object A has the same momentum as object B. 4) object A has half the momentum of object B. 5) object A has four times the momentum of object B
Problem 3: A bullet is accelerated down the barrel of a gun by hot gases produced in the combustion of gun powder.
part a: What is the magnitude of the average force exerted on a bullet of massmmto accelerate it to a speedvvin a time interval of t?
part b: What is the magnitude of the average force, in newtons, if the bullet has a mass of0.032kg, and the gun accelerates it to a speed of620m/in a time of1.95ms?
problem 4: A person slaps her leg with her hand, bringing her hand to rest in270ms from an initial speed of4.1m/s.
What is the magnitude of the average force exerted on the leg, in newtons, taking the effective mass of the hand and forearm to be 1.45 kg?
Problem 5: A1.75-kg falcon catches and holds onto a0.675-kg dove from behind in midair.
What is their final speed, in meters per second, after impact if the falcon's speed is initially26.5m/s and the dove's speed is6.5m/s in the same direction?
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