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- 1. Multiple ChoiceTrue or False: When the forces on an object are balanced, the object must move at constant speed.TrueFalse
- 2. Multiple ChoiceTrue or False: When a resultant force acts on an object, the object must accelerate.TrueFalse
- 3. Multiple ChoiceTrue or False: When there is no resultant force acting on an object it must move at constant speed.TrueFalse
- 4. Multiple Choice
If no resultant force acts on an object, which of the following could be true?
(select all appropriate answers)
It is acceleratingIt is deceleratingIt is moving at constant speedIt is stationary - 5. Multiple Choice
If a resultant force acts on an object, which of the following could be true?
(select all appropriate answers)
It is acceleratingIt is deceleratingIt is moving at constant speedIt is stationary - 6. Multiple ChoiceIf the surface area of a moving object increases, what happens to the magnitude of the air resistance force acting on it?IncreasesDecreasesRemains constant
- 7. Multiple ChoiceCompared to an object with a smaller surface area, an object with a larger surface area will have …a higher terminal velocitya lower terminal velocitythe same terminal velocity
- 8. Multiple ChoiceIf an object is moving downwards at constant speed and a force is applied upwards, what is the first thing which happens?Its speed increasesIts speed decreasesIt stops
- 9. Multiple ChoiceIf an object is moving left at constant speed and a force is applied leftwards, what is the first thing which happens?Its speed increasesIts speed decreasesIt stops
- 10. Multiple ChoiceIf an object is moving right at constant speed and a force is applied leftwards, what is the first thing which happens?Its speed increasesIts speed decreasesIt stops
- 11. Multiple ChoiceIf an object is moving downwards at constant speed and a force is applied upwards, what happens to its downwards speed?It increasesIt decreasesIt remains constant
- 12. Multiple Choice
When a falling skydiver opens their parachute …
(select all appropriate answers)
They move upwardsThey move downwardsThey accelerate upwardsThey accelerate downwardsThey stop - 13. Multiple Choice
When a falling skydiver opens their parachute …
(select all appropriate answers)
They move upwardsThey move downwardsTheir speed increasesTheir speed decreasesThey stop - 14. Multiple ChoiceWhen a skydiver first exits an aeroplane, which force is larger?WeightAir resistanceForces are equal
- 15. Multiple ChoiceWhen a skydiver reaches terminal velocity, which force is larger?WeightAir resistanceForces are equal
- 16. Multiple ChoiceWhen a skydiver first opens their parachute, which force is larger?WeightAir resistanceForces are equal
- 17. Multiple Choice
What is the link between speed of an object and the drag it experiences?
faster = more drag
no link
slower = more drag
- 18. Multiple Choice
What feature of a velocity time graph gives the acceleration?
gradient
area under graph
x-axis
y-axis
- 19. Multiple Choice
Describe the motion at c
stopped
constant speed
accelerating
decelerating
- 20. Multiple Choice
What is happening to the motion from a to c
it's accelerating throughout
it accelerates to start with then declerates
it accelerates and then the acceleration slows down
it travels at a constant speed
- 21. Multiple Choice
Between a and c the acceleration reduces. What is happening to the drag force and the resultant force?
drag force increases
resultant force increases
drag force increases
resultant force decreases
drag force decreases
resultant force decreases
drag force decreases
resultant force increases
- 22. Multiple Choice
What is happening to the drag force and the resultant force at d?
drag force increases
resultant force increases
drag force increases
resultant force decreases
drag force decreases
resultant force decreases
drag force decreases
resultant force increases
- 23. Multiple Choice
What is happening to the gradient of the line from a to c
it's accelerating throughout
it accelerates to start with then declerates
it accelerates and then the acceleration slows down
it decreases
- Answer choicesTagsAnswer choicesTags