Instead of a Ballistic Pendulum We Could Use a System $\times$

question 24

Multiple Choice

Instead of a ballistic pendulum we could use a system where the bullet (mass = m) is fired into a block (mass = M) that is coupled to an uncompressed spring (with spring constant k) .The speed of the bullet,v,can be found by measuring the maximum distance,d,of compression of the spring.In this situation the initial speed of the bullet is given by:

• A)(k \(\times\) (M+m))^1/2 \(\times\) d/M
• B)(k \(\times\) (M))^1/2 \(\times\) d/m
• C)(k \(\times\) (M+m))^1/2 \(\times\) d/m
• D)(k \(\times\) (M-m))^1/2 \(\times\) d/m
• E)(k \(\times\) (M+m))^1/2 \(\times\) d/2m

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Definitions:

Chordates

A large group of animals that includes all vertebrates as well as two groups of invertebrates, characterized by having a notochord at some stage of development.

Common Ancestor

The most recent individual from which all organisms in a group are directly descended.

Monkeys

Primates that are not apes or humans, typically having a tail and being smaller than apes, inhabiting mainly tropical forests.

Human Evolution

The lengthy process of change by which people originated from apelike ancestors, involving developments in physical, social, and cultural traits.