Test - Force Flashcards
1
Q
- A baseball player swings his bat and misses the ball but hits a fly that was hovering over home plate. The acceleration of the fly compared to what the acceleration of the ball would have been with the same force applied to it would be
A. Smaller. B. Larger. C. The same. D. Not enough info
A
B. Larger
Notes-U6,C3 pg. 22
2
Q
- Related to the amount of force needed to change an objects motion
A
I. Momentum
Notes-U6,C3 pg 23
3
Q
- Why does someone not wearing a seatbelt in a car fly forward when the car stops suddenly? Make sure to include which law explains this.
A
Because Newton’s First Law says an object in motion resists a change in motion, due to inertia
Notes-U6,C3 pg 20
4
Q
38a. What would be the speed of the falling skydiver after 5 seconds?
A
49.0 m/s
5
Q
38b. What speed will the skydiver eventually reach
A
55m/s
Notes-U6,C3 pg 22
6
Q
38c. Why does this occur?
A
Gravity and air resistance become balanced, and a human falls at a constant velocity
Notes-U6,C3 pg 22
