1. A snowmobile moves according to the velocity-time graph shown in the drawing.
ID: 2272713 • Letter: 1
Question
1. A snowmobile moves according to the velocity-time graph shown in the drawing. What is the snowmobile's average acceleration during segment C? The scale for the time axis is 50 s per increment, and the scale for the velocity axis is 400 m/s per increment.
2. A cement block accidentally falls from rest from the ledge of a 53.5-m-high building. When the block is 14.4 m above the ground, a man,1.99 m tall, looks up and notices that the block is directly above him. How much time, at most, does the man have to get out of the way?
A snowmobile moves according to the velocity - time graph shown in the drawing. What is the snowmobile's average acceleration during segment C? The scale for the time axis is 50 s per increment, and the scale for the velocity axis is 400 m/s per increment A cement block accidentally falls from rest from the ledge of a 53.5 - m - high building. When the block is 14.4 m above the ground, a man,1.99 m tall, looks up and notices that the block is directly above him. How much time, at most, does the man have to get out of the way?Explanation / Answer
400*2/50= 800/50= 16 m/sec^2
D= 1/2 at^2= 4.9t^2
It takes 39.1 =4.9t^2 t= 2.824 sec to get to 14.4 m above ground
It takes 51.51= 4.9t^2 t= 3.242 sec to get to the man.
So he has 3.242-2.824= 0.418 sec to get out of the way.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.