Question

Which of the following has the largest momentum?
a. 5kg bowling ball moving with a velocity of 2m/s
b. A 4kg rock rolling down a hill with a velocity of 3m/s
c. A 200kg rock sitting on top of a hill that is 5m height.
d. 0.0025kg bullet that is moving with a velocity of 200m/s

Answer 1

Answer:

Option b

Explanation:

The formula of momentum is $p=mv$

where p is the momentum , m is the mass in kg and v is the velocity in m/s, so

a) momentum is

$p=mv\\p=5(2)\\p=10$

b) momentum is

$p=mv\\p=4(3)\\p=12$

c) momentum is

here since the rock is sitting on top of a hill which means the object is stationary or in other words the object is at rest, which means if an object is at rest the velocity is 0m/s so momentum is zero of a stationary object because

$p=mv\\p=200(0)\\p=0$

d) momentum is

$p=mv\\p=0.0025(200)\\p=0.5$

so the highest momentum is in part b which is 12 so option b is our answer.

Answer 2

Answer:

c

Explanation: