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- 1. Multiple Choice
A 5 N force is applied to a 3 kg ball to change its velocity from +9 m/s to +3 m/s. The impulse on the ball is ______ N s.
-2.5
-10
-18
-45
- 2. Multiple ChoiceA 0.250 kg cart moving at 0.400 m/s has how much momentum?0.1 kg-m/s1 kg-m/s10 kg-m/s100 kg-m/s
- 3. Multiple ChoiceSofter landings tend toincrease impact forceincrease forceincrease collision timeincrease change in momentum
- 4. Multiple ChoiceThe difference between a car hitting a wall vs. a car hitting a hay stack isthe Impulse on the car hitting the wall is greaterthe change in momentum of the car hitting the wall is greaterthe force on the car hitting the hay stack is greaterthe collision time of the car hitting the hay stack is greater
- 5. Multiple ChoiceA runner has a momentum of 670 kg m/s and is travelling at a velocity of 9 m/s. What is his mass?6030 kg0.0134 kg74.4 kg80 kg
- 6. Multiple ChoiceThe units for Impulse areN/sN.sNm/s
- 7. Multiple Choice
Cart A is pulled with a 2 Newton force for 2 seconds, and Cart B is pulled with a 1 Newton force for 3 seconds. Which cart experiences the greatest impulse?Cart BCart Athey are the same - 8. Multiple ChoiceA boy kicks a football with a force of 20 N, the time the force acts for is 0.3 s.
Calculate the impulse on the ball.1 N.s6 N.s66 N.sNone of these - 9. Multiple ChoiceThe purpose of crumble zones on a car is todecrease time of impact.increase force of impact.increase the time of impact.decrease the impulse during impact.
- 10. Multiple Choice
In an isolated system, the net ____ on that system is zero.
external force
internal force
time interval
displacement
- 11. Multiple ChoiceThe impulse-momentum theorem states thatthe impulse on an object is equal to the change in momentum it causesthe force on a moving object is equal to the magnitude of the impulse.the impulse on an object is greater than the change in momentum it causesthe impulse on an object is less than the change in momentum it causes
- 12. Multiple ChoiceA constant force of 4.5 N acts on a 7.2-kg object for 10.0 s. What is the change in the object's velocity?6.3 m/s3.2 m/s1.2 m/s4.33 m/s
- 13. Multiple ChoiceIf an air bag changes a 60 kg person's speed from 40.0 m/s to 0.0 m/s, what impulse must act on the person?2400 kg.m/s1.5 kg.m/s0.67 kg.m/s1500 kg.m/s
- 14. Multiple ChoiceThe velocity of a 975-kg car is changed from 12.0 m/s to 27.0 m/s in 15s by an external, constant force. What is the magnitude of the force?9.75×102 N1.46×104 N9.75×103 N975 kg·m/s
- 15. Multiple ChoiceA force acted upon an object for 3 s as shown in the graph below.
What is the magnitude of the impulse on the object?34.569 - 16. Multiple Choicewhat is the objects momentum for 8 m/s681012
- 17. Multiple Choicewhat is the object's velocity for momentum of 6 kg.m/s?2468
- 18. Multiple Choice
can a bullet have the same momentum as a truck?
yes
no
- 19. Multiple ChoiceWhat is the object's mass?1 kg2 kg1.5 kg2.5 kg
- 20. Multiple ChoiceA biker with a mass of 75 kg moves along the path with a constant velocity of 5 m/s. What is the biker's momentum?25 m/s375 m/s25 kg m/s375 kg m/s
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