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- 1. Multiple Choice
A leftward-moving car is skidding to a stop across a level roadway with locked wheels. Ignore air resistance.
What is the direction of the APPLIED force?
There's no applied force
- 2. Multiple Choice
A baseball player did a head-first dive and is sliding to the right across the infield dirt. Ignore air resistance.
What is the direction of the FRICTION force?
There's no friction force
- 3. Multiple Choice
A leftward-moving car is skidding to a stop across a level roadway with locked wheels. Ignore air resistance.
What is the direction of the FRICTION force?
There's no friction force
- 4. Multiple Choice
A downward-moving skydiver is falling with constant speed.
What is the direction of the GRAVITIY force?
There's no gravity force
- 5. Multiple Choice
A downward-moving skydiver is falling with constant speed.
What is the direction of the NORMAL force?
There's no normal force
- 6. Multiple Choice
A baseball player did a head-first dive and is sliding to the right across the infield dirt. Ignore air resistance.
What is the direction of the APPLIED force?
There's no applied force
- 7. Multiple Choice
A small elevator is secured to a motor by a cable and is moving upward. Ignore air resistance.
What is the force pulling upward?
Friction force
Normal force
Applied force
Tension force
Gravity force
- 8. Multiple Choice
A football that was kicked is moving upward and rightward towards the maximum height of its trajectory. Ignore air resistance.
Which forces are acting on the football?
Friction force
Normal force
Applied force
Tension force
Gravity force
- 9. Multiple Choice
A force is applied to a box to accelerate it to the left across the floor at a constant speed. Ignore air resistance.
Which force is stronger?
Friction force
Normal force
Applied force
They are all the same
Gravity force
- 10. Multiple Choice
A baseball player did a head-first dive and is sliding to the right across the infield dirt. Ignore air resistance.
Which force is stronger?
Friction force
Normal force
Applied force
They are all the same
Gravity force
- 11. Multiple Choice
A downward-moving skydiver is falling with constant speed.
Which force is stronger?
Friction force
Normal force
Applied force
They are all the same
Gravity force
- 12. Multiple Choice
A leftward-moving car is skidding to a stop across a level roadway with locked wheels. Ignore air resistance.
Which force is stronger?
Friction force
Normal force
Applied force
They are all the same
Gravity force
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