Momentum and Impulse

Momentum and Impulse

Poll

In a scale of 1-5 (5 being the highest) how well do you remember the concepts on Momentum and Impulse learned from your JHS Physics?

• 1

• 2

• 3

• 4

• 5

Multiple Choice

Which between the two has greater momentum: sleeping lion or walking ant?

MOMENTUM

It is the product of mass and velocity of an object and describes the "inertia" of moving objects.

p = mv
(momentum = mass x velocity)

unit for momentum: kg $\cdot$  m/s

Fill in the Blanks

What is the momentum of Usain Bolt in kg-m/s (mass: 94 kg) while running at his top speed of 12 m/s? NO NEED TO TYPE THE UNIT; NUMBER ONLY

Fill in the Blanks

Theoretically, how fast should the 94-kg Usain Bolt (in m/s) move in order for him to have the same momentum as a 2300-kg elephant running at 4 m/s? Answer should have 2 decimal places.

PLEASE PUT THE APPROPRIATE UNIT

Multiple Choice

Which has the greatest momentum among these 3?

• a 55-kg man-skateboard system moving at 40 m/s

• a 181-kg motorcycle moving at 20 m/s

• a 10-wheeler truck parked on the side of a road

Open Ended

prior knowledge check: How are the concepts of IMPULSE and FORCE similar/different from one another?

IMPULSE

force acting on a body within a certain amount of time

I = Ft

(impulse = force x time)

Unit for impulse: N $\cdot$  s

Fill in the Blanks

What is the impulse produced by a 1000 N force that acts on an object for 5 seconds?

NO NEED TO INCLUDE THE UNIT; NUMBER ONLY

Fill in the Blanks

How long do you need to impart an 80-N force to produce an impulse of 400 N $\cdot$  s?

PLEASE INCLUDE THE UNIT THIS TIME (abbreviation)

Multiple Choice

Which of the following imparts the greatest impulse on the crate in each of their turn to move it?

• Jon who pushes it with a force of 150 N for 5 seconds

• Jaime who pushes it using one hand with a force of 100 N within 6 seconds

• Gregor who pushes it with a force of 300 N for 3 seconds

Open Ended

prior knowledge check: How are impulse and momentum change related with one another?

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