Test- U6 Force Flashcards
1
Q
- A baseball player swings his bat and misses the ball but it’s a fly that was hovering over the Homeplate. The acceleration of the fly compared with the acceleration of the ball would have been with the same force applied to it would be:
A
Larger
U6 C3 Notes- Newton’s laws of motion
2
Q
- A man weighing 800 N is standing on a chair. In order to support the man, what force is the chair exerting?
A
800 N up
U6 C3 Newton’s Laws of Motion
3
Q
- In the picture to the right, if the card were quickly pulled off the cup like the arrow suggests, what property would explain why the coin falls into the cup rather than moving with the card?
A
Inertia
U6 C3 Newton’s Laws of Motion
4
Q
- What would be the speed of the falling skydiver after five seconds?
A
49 m/s
U6 C3 Newton’s Laws of Motion
5
Q
- What speed will the eventually reach? What is this speed called?
A
55 m/s, terminal velocity
U6 C3 Newton’s Laws of Motion
6
Q
- Why does the speed of a skydiver eventually reach terminal velocity?
A
Because gravity pushes down an air resistance pushes up- this becomes balanced which makes a falling human fall at a constant velocity.
U6 C3 Newton’s Laws of Motion
