Impulse Pt.2

A 100kg satellite that gets launched from rest by a force of 50N for 100 seconds will have a final velocity of ...

• This problems is asking to find the Force

• This problem is asking to find the final velocity

• This problems is asking to find the time

• This problems is asking to find the initial velocity

A ball has a p_i of 6 kgm/s and a force acts on it, for 3 seconds. It then gets a p_f of -4 kgm/s. Is the image correct?

• Yes

• No

A classmate gets the impulse from the graph below to be 12 kgm/s. Is that correct?

• Yes

• No

Which object has the most momentum?

• A 60kg person running at 5 m/s

• A 1 kg mass launched at 200 m/s

• A 500kg car moving at 0.5 m/s

• A 2000kg truck that is stopped at a stop sign

What would take the most impulse to bring to a stop?

• A 60kg person running at 5 m/s

• A 1 kg mass launched at 200 m/s

• A 500kg car moving at 0.5 m/s

• A 2000kg truck that is stopped at a stop sign

A 5 N force is applied to a skateboarder for 10 seconds. What is true of her new momentum?

• It is 50 kg m/s

• It is 2kg m/s

• It has changed by 50kg m/s

• It has changed by 2 kg m/s

An object goes from 50 m/s to 5 m/s in an accident. What was the impulse experienced?

• 45 m/s

• 45 Ns

• 9 Ns

• not enough info

A car hits a tree with a force of 2000 N and comes to a stop in .002 s. What is the impulse?

• 4,000,000 kg m/s

• 40 kg m/s

• 4 kg m/s

• not enough information

Applying a force for a longer time increases the change in ______.

• mass

• time

• momentum

• impulse

In the video which ball had a larger change in momentum?

• bouncy

• non-bouncy