Test-Unit 6 Motion Flashcards
1
Q
- An object in motion must be undergoing a change of
A
position
U6 C2- describing motion
2
Q
- A softball pitcher throws a ball at 42 meters per second. If the batter is 18 meters away from the pitcher, approximately how much time does it take for the ball to reach the batter?
A
.43 s
U6 C1 - describing motion pg. 2
3
Q
- A high speed train travels with an average speed of 227 km/hr. The train travels for two hours. How far does the train travel?
A
454 km
U6 C1-describing motion pg. 2
4
Q
- In this velocity vs time graph, the person at point c:
A
Has negative acceleration ; going downward towards the x axis
U1 C2- acceleration pg. 12
5
Q
- At what point is the rate of change of velocity the greatest?
A
A; has the steepest slope
U1 C2- acceleration pg. 12
6
Q
- The velocity of an object must include both a _____ and a ____.
A
Speed and direction
U6 C1- describing motion pg. 3
7
Q
- Explain the difference, in relation to speed, between positive and negative acceleration. Stretch and label a graph of each. Be sure to label your axes
A
When you have positive accelerationyou speeding up and when you have negative you are slowing down
U6 C1- describing motion pg. 5
8
Q
- Describe the motion of a biker at A, B,C as shown by the distance vs time graph 1
A
A is at a constant speed
U6 C2- acceleration pg. 12
9
Q
- Describe the motion of a biker at A, B,C as shown by the distance vs time graph 2
A
B is not moving
U6 C2- acceleration pg. 12
