Download Newton`s 2nd Law and Momentum Problems

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Newton’s 2nd Law and Momentum Problems
1. Cable strength must be taken into consideration when determining the load limit to be
put on a crane that is designed to lift heavy equipment. Calculate how much force is
necessary to lift and accelerate a 10,000-Kg object at a rate of 1.5 m/s2?
2. NASA scientists need to know the forces necessary while launching a rocket. How
much force is required to accelerate a 3,000-Kg rocket at a rate of 80 m/s2?
3. If 1000 Kilonewtons (1000 Newtons) of force are used to launch a 1,500-Kg missile,
what is the acceleration?
4. How much force is required to accelerate a 1750-Kg dragster at a rate of 12 m/s2?
5. What is the mass of a dragster that achieves an acceleration of 9 m/s2 with a 10,500
Newton force?
6. How much mass can a winch pull if the load is pulled with 7,500 Newtons and
accelerated at a rate of 1.2 m/s2?
7. Which football player has the most momentum: a 160-Kg linebacker running at 4 m/s
or a 100-Kg tight end running at 7 m/s?
8. Which vehicle has more momentum: a 2000-Kg pick-up truck traveling at 25 m/s or a
250-Kg motorcycle traveling at 80 m/s?
9. How fast must a 90-Kg football player run to have the same momentum as a150-Kg
player running at 6 m/s?
10. When a cannon is fired, Newton’s 3rd Law states that there will be an equal and
opposite reaction, and momentum will be conserved. If a 20-Kg cannon ball is fired
at a velocity of 980 m/s, what will the rearward velocity of a 1500-Kg cannon be if
the cannon is mounted on wheels and allowed to roll freely?